Brilliant innovator Rocco Martino helped pave the way for spaceflight and smartphones – The Globe and Mail

Dr. Martino, who was known as Rocky, was never content to restrict his drive and intellect to a single field.

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Dr. Rocco Martino was a brilliant, eclectic overachiever who transformed society but remained unknown beyond a small group of admiring cognoscenti. Bill Gates and Steve Jobs are household names; many know of Jack Kilby, who invented the microchip, and Larry Ellison of Oracle. But Dr. Martino, a Canadian scientist who died June 29, arguably did as much to shape our modern world as a host of better-known people.

Dr. Martino, who was known as Rocky, was never content to restrict his drive and intellect to a single field. Over the course of his career he paved the way for human space flight, facilitated the design of complex construction projects, and laid the footings for the smartphone years before its commercial debut. His low profile was due in large part to his prescience: As a rule he was so close to the cutting edge in whatever discipline he pursued that few of his colleagues could grasp what he was doing.

Rocco Leonard Martino was born of Italian-Canadian immigrants in Toronto on June 25, 1929, and after early education in Toronto received his PhD in 1956 from the University of Toronto Institute for Aerospace Studies. His doctoral thesis involved the then-revolutionary use of a state-of-the-art mainframe computer to calculate, predict and accommodate the extreme conditions (especially frictional heat) endured by a spacecraft re-entering Earths atmosphere at velocities of up to 25,000 kilometres an hour. The analytical and modelling approaches in his doctoral research proved vital to NASAs subsequent development of the ablative heat shields that safeguard astronauts during their scorching-hot homecomings.

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Dr. Martino was an early adopter of and lifelong cheerleader for the digital computer. Not only did he realize its applications in scientific calculations, as in his PhD thesis; he also foresaw its use in teaching mathematics. Years before personal computers were commercially available, he taught his nine-year-old son Peter to program a minicomputer, then flew him to a conference in Chicago on computer-based education.

Dr. Martino was perspicacious enough to see that the delicate, time-intensive programming techniques current in the early 1950s had to be simplified for computers to reach their full potential. He therefore helped modify computer compilers to move programming language from an arcane realm of zeroes and ones to a closer approximation of everyday speech. Dr. Martino also contributed significantly to the development of critical-path method or CPM, a scheduling technique (computerized, of course) that gives project managers a rock-solid base from which they can plan, execute and control large projects. The original World Trade Center towers and the first U.S. ballistic-missile submarines were both constructed using CPM.

A list of Dr. Martinos colleagues throughout this time reads like a whos who of 20th-century science and technology. Among other luminaries, he worked with Sir Robert Watson-Watt, a pioneer of radar; Grace Murray Hopper, a key contributor to the universal computer language COBOL; and John Mauchly, co-inventor of the ENIAC a room-filling, vacuum-tube-powered monster at the University of Pennsylvania that was the most powerful computer of its time.

There was more in his life than work, however. I like to think that my parents had the first computer date, jokes Dr. Martinos son Peter, a businessman and former U.S. Navy submarine officer who lives in Maryland. Or at least the first date that resulted from computers. One night when Dad and John Mauchly were working together, Dr. Mauchlys daughter Sidney invited a friend to dinner, Barbara DIorio, and asked her fathers hotshot young colleague to join them. Dad and Mom married six months later and were together for nearly 60 years.

In 1972, after professorships at the University of Waterloo (one of Canadas leading centres for its use of and research on digital computers) and New York University, Dr. Martino incorporated his own company, XRT, after settling down in Villanova, Pa., to raise his family.

In the early 1990s, Dr. Martino wondered if the vast and growing power of computers could be united with the increasingly ubiquitous mobile phone. By 1995 he had developed and patented the CyberFone, a convergent-technology prototype that provided proof of concept for what we now know as the smartphone, a dozen years before the first iPhone was launched.

Other people made billions from such ideas, but Dr. Martino never envied them for him the joy of invention mattered more than wealth and fame. But even the loftiest of his professional accomplishments took second place to his personal relationships; he never neglected friends or family to attain his goals. Peter Martino remembers a father who was always there for him: coaching baseball, leading his Cub Scout pack, patrolling nearby while he learned to sail, and judging races of Sunfish and Laser sailboats.

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To profession and family, Dr. Martino added a strong commitment to religious belief, and was throughout his life a vigorous member of the Roman Catholic Church. Among the 30 books he published was The Resurrection, a novelized treatment of Jesuss execution and its aftermath, which fleshed out imagined dialogues among participants (disciples, Roman officers, Pharisaic priests) with a rigorous forensic examination of the event crime-scene investigation circa AD 30. Another book, Rocket Ships and God, addressed and dismissed the conflicts between science and religion that many people assume exist wrongly, in Dr. Martinos opinion.

Dr. Martino served on the boards of the Vatican Observatory Foundation, the Sovereign Military Order of Malta, the National Italian American Foundation, the Gregorian University Foundation and the Papal Foundation. In the course of this activity he met popes John Paul II, Benedict and Francis, and was recognized for his contributions by the church. Dr. Martino was made a Knight of the Order of St. Gregory; a Knight of the Equestrian Order of the Holy Sepulchre of Jerusalem; and a Knight of the Order of St. John of Jerusalem, Rhodes and Malta.

In 2014, Dr. Martino summed up his professional approach for the U.S. online magazine Inventors Digest: As Machiavelli so aptly put it some five hundred years ago, Nothing is more perilous to success than a new system or idea: It will meet great resistance from those who are affected and only lukewarm support from those who will benefit. There are plenty of people with an opinion about what is innovative and not, but listening to them wont do you much good. As a race we humans must innovate, not imitate; if we dont we will stagnate and eventually die. Our instinct for survival is like a compass that points us toward the future. At this point, six years before his death, Inventors Digest estimated that computer systems designed by Dr. Martino were moving several trillion U.S. dollars daily around the globe.

In 2018, Dr. Martino was diagnosed with stage-four metastasized cancer, but persisted as long as he could in his newest interest, a prototype for a health-care companion robot to assist the old and infirm. At his request he spent his last six months at home, slipping in and out of consciousness. When he awoke, Peter says, he was always asking those who visited him how he could help. He leaves his wife, Barbara; sons, Peter, Joseph, Paul and John; 13 grandchildren; and two great-grandchildren. Significantly, he died in the den that a half-century earlier had held his first home computer.

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Brilliant innovator Rocco Martino helped pave the way for spaceflight and smartphones - The Globe and Mail

NASA still grappling with effects of coronavirus pandemic – SpaceNews

WASHINGTON Four months after closing centers because of the coronavirus pandemic, NASA has been able to keep its highest priority missions on track, even as others have suffered delays.

NASAs Mars 2020 mission is scheduled for launch July 30 on an Atlas 5 rocket from Cape Canaveral, Florida. The launch slipped from July 17 because of several launch vehicle and related processing issues, but the launch period for the mission remains open through at least Aug. 15.

Launch preparations for the mission continued amid the coronavirus pandemic. I really cannot say enough about how incredible this team was, Michael Watkins, director of the Jet Propulsion Laboratory, said about personnel working on the mission during a July 20 webinar organized by the Space Foundation. It is a heroic effort in the best of times, and this team really knuckled down and completed it on schedule.

Watkins said that, among the more than 1,000 people involved with the mission, about 100 have been at Cape Canaveral working on final launch preparations, with several hundred more working at JPL. Its been a surprisingly smooth experience given all the troubles with COVID, he said. Were basically at the pad, ready to go.

NASA made Mars 2020 one of its two highest priorities in the spring when the pandemic forced NASA to close its centers to all but essential personnel. The other was the SpaceX Demo-2 commercial crew test flight, which successfully launched May 30 and docked with the International Space Station the next day.

That mission is nearing an end. NASA Administrator Jim Bridenstine, speaking at the same webinar, said preparations for the return home by astronauts Bob Behnken and Doug Hurley would become the focus once Behnken and Chris Cassidy performed the last in a series of spacewalks, which they carried out July 21. Then theyre going to be focused like a laser on coming home, he said, with a splashdown off the Florida coast currently targeted for Aug. 2.

While both Demo-2 and Mars 2020 have remained on track, other major NASA programs have suffered delays. NASA announced July 16 that the launch of the James Webb Space Telescope had slipped seven months, to the end of October 2021, with the pandemic contributing at least three months to that overall delay.

Testing of the Space Launch System core stage at the Stennis Space Center, part of a Green Run campaign that will conclude with a full-duration static-fire test, was halted for two months when the pandemic closed the center. That work has since resumed, with the static-fire test now scheduled for October, but Bridenstine has hinted that the pandemic could cause additional delays.

Weve had outbreaks of coronavirus on that program and people that are working on that test stand, he said during a July 17 Aviation Week webinar. Every time we have something like that, weve got to make sure were putting people into a position where were not infecting others, that were doing the contact tracing. It brings everything to a stop.

He said that he felt OK for now regarding the schedule, but additional cases that halt work for up to a week at a time could use up the margin in the test schedule. If we dont get a grip on the coronavirus pandemic in the near future, he warned, its going to be difficult.

That could also affect the first SLS launch, Artemis 1, notionally scheduled for November 2021. If the coronavirus pandemic is not an issue, Im very confident in November of 2021. If it continues to be an issue, it could be a challenge, he warned.

As of July 21, all of NASAs facilities were at Stage 3 of its pandemic response plan except for the Marshall Space Flight Center, which remained at Stage 4. At its peak, about two-thirds of NASAs 18 field centers and other facilities were at Stage 4, which allowed only mission-essential personnel on site. At Stage 3, additional personnel needed for critical work for missions are allowed to return, although mandatory telework otherwise remains in place.

NASA has shifted most of its centers back to Stage 3 despite a spike in coronavirus cases in many parts of the country, particularly in southern and western states. During a July 16 media teleconference about the JWST delay, Steve Jurczyk, NASA associate administrator, said there has been an increase in cases reported among NASA personnel, although not apparently due to work at the centers.

The cases at some of our centers have increased quite a bit over the last several weeks, he said, citing in particular those in Alabama, California, Florida and Texas, but not giving specific numbers. We really havent so far detected any cases where one employee has transmitted the virus to another at work. So far, we believe that all, or most, of the cases are people who are contracting the virus in the community and then coming to work.

The surge in coronavirus cases has privately alarmed some people involved with Mars 2020 who are traveling to Florida to support or observe the launch. Some traveling from the Washington, D.C. area are considering driving rather than flying, despite the additional time and expense, to reduce their risk of exposure to COVID-19.

As with the Demo-2 launch, NASA is limiting the number of media personnel who will be on site at the Kennedy Space Center to cover the launch, and most pre-launch briefings will have remote access only. For the protection of media and Kennedy employees, the Kennedy Press Site News Center facilities will remain closed to all media throughout these events, NASA said in a July 17 media advisory.

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NASA still grappling with effects of coronavirus pandemic - SpaceNews

NASA-ESA Solar Orbiter mission spots ‘campfires’ in closest images ever taken of the Sun – Firstpost

FP TrendingJul 22, 2020 08:58:31 IST

Tofill the massive gaps in our understanding of the Sun, the European Space Agency (ESA) and the National Aeronautics and Space Administration (NASA) launched the Solar Orbiter mission on 9 February 2020.

The spacecraft completed its first close pass of the Sun in mid-June and the first images from it havenow been released, including the closest pictures ever taken of the Sun.

"These amazing images will help scientists piece together the Suns atmospheric layers, which is important for understanding how it drives space weather near the Earth and throughout the solar system," said Holly Gilbert, NASA project scientist for the mission at NASA's Goddard Space Flight Center in Greenbelt, Maryland.

'Campfires' spotted by the Solar Orbiter are annotated with white arrows. Image: NASA/ESA

At the time the images were captured, the spacecraft wasjust 77 million km away from the Sun,Science Dailyreported.

An instrument called the Extreme Ultraviolet Imager (EUI)on the Solar Orbiter captured this first image, showing "campfires" during itsfirst perihelion theposition ofthe spacecraft in its elliptical orbit where itmakes itsclosest approach to the Sun.

"The campfires are little relatives of solar flares that we can observe from Earth, million or billion times smaller," Science Dailyquoted David Berghmans of the Royal Observatory of Belgium (ROB), Principal Investigator of the EUI instrument, as saying.

Berghmans also said that the Sun might look quiet at first glance, but those miniature flares can be observed everywhere when we look in detail.

The Solar Orbiter is returning its first science data, including images of the Sun taken from closer than any spacecraft in history. Image: NASA/ESA

Scientists areunsureif these campfires are just tiny versions of big flares or they are generated due to an entirely different mechanism that isn't yet known.

ESAs Solar Orbiter project scientist Daniel Mller said that they did not expect these results so early, adding that the photos show the spacecraft is "off to an excellent start."

According toEurekAlert,the coronaviruspandemicthrew multiple challenges to the mission.It led to theshut downof mission control at the European Space Operations Center in Darmstadt, Germany, forovera week.Owing to the COVID-19 situation, teams involved in the mission also had to perform some critical operations remotely.

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NASA-ESA Solar Orbiter mission spots 'campfires' in closest images ever taken of the Sun - Firstpost

Are the Earths magnetic poles about to swap places? – EarthSky

Earths magnetic field extends from the Earths interior out into space, surrounding our planet like an invisible force field , protecting life from harmful solar radiation by deflecting away charged particles from the sun. But this field is continuously changing. Indeed, our planets history includes numerous global magnetic reversals, where north and south magnetic poles swap places. Image via NASA Goddard Space Flight Center/ The Conversation.

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By Yael Annemiek Engbers, University of Liverpool and Andrew Biggin, University of Liverpool

Deep inside the Earth, liquid iron is flowing and generating the Earths magnetic field, which protects our atmosphere and satellites against harmful radiation from the sun. This field changes over time, and also behaves differently in different parts of the world. The field can even change polarity completely, with the magnetic north and south poles switching places. This is called a reversal and last happened 780,000 years ago.

Saint Helena, where Earths magnetic field behaves strangely. Image via Umomos/ Shutterstock/ The Conversation.

Between South America and southern Africa, there is an enigmatic magnetic region called the South Atlantic Anomaly, where the field is a lot weaker than we would expect. Weak and unstable fields are thought to precede magnetic reversals, so some have argued this feature may be evidence that we are facing one.

Now our new study, published June 12, 2020, in the Proceedings of the National Academy of Sciences, has uncovered how long the field in the South Atlantic has been acting up and sheds light on whether it is something to worry about.

Weak magnetic fields make us more prone to magnetic storms that have the potential to knock out electronic infrastructure, including power grids. The magnetic field of the South Atlantic Anomaly is already so weak that it can adversely affect satellites and their technology when they fly past it. The strange region is thought to be related to a patch of magnetic field that is pointing a different direction to the rest at the top of the planets liquid outer core at a depth of 1,795 miles (2,889 km) within the Earth.

The geomagnetic field at Earths surface with the South Atlantic Anomaly outlined in black and St. Helena marked with a star. Colors range from weak fields (blue) to strong fields (yellow). Image via Richard K. Bono/ The Conversation.

This reverse flux patch itself has grown over the last 250 years. But we dont know whether it is simply a one-off product of the chaotic motions of the outer core fluid or rather the latest in a series of anomalies within this particular region over long time frames.

If it is a non-recurring feature, then its current location is not significant it could happen anywhere, perhaps randomly. But if this is the case, the question of whether its increasing size and depth could mark the start of a new reversal remains.

If it is the latest in a string of features reoccurring over millions of years, however, then this would make a reversal less likely. But it would require a specific explanation for what was causing the magnetic field to act strangely in this particular place.

Volcanic rocks

To find out, we travelled to Saint Helena an island in the middle of the South Atlantic Ocean. This island, where Napoleon was exiled to and eventually died in 1821, is made of volcanic rocks. These originate from two separate volcanoes and were erupted from between eight million and 11.5 million years ago.

Lead author Yael Engbers is drilling a core on Saint Helena. Image via Andy Biggin/ The Conversation.

When volcanic rocks cool down, small grains of iron-oxide in them get magnetized and therefore save the direction and strength of the Earths magnetic field at that time and place. We collected some of those rocks and brought them back to our lab in Liverpool, where we carried out experiments to find out what the magnetic field was like at the time of eruption.

Our results showed us that the field at Saint Helena had very different directions throughout the time of eruption, showing us that the field in this region was much less stable than in other places. It therefore challenges the idea that the abnormality has only been around for only a few centuries. Instead, the whole region has likely been unstable on a timescale of millions of years. This implies the current situation is not as rare as some scientists had assumed, making it less likely that it represents the start of a reversal.

A window into Earths interior

So what could explain the odd magnetic region? The liquid outer core that is generating it moves (by convection) at such high speeds that changes can occur on very short, human timescales. The outer core interacts with a layer called the mantle on top of it, which moves far slower. That means the mantle is unlikely to have changed very much in the last ten million years.

Earths inner structure. Image via Wikipedia.

From seismic waves passing through the Earth, we have some insight into the structure of the mantle. Underneath Africa there is a large feature in the lowermost mantle where the waves move extra slow through the Earth meaning theres most likely an unusually warm region of the lowermost mantle. This possibly causes a different interaction with the outer core at that specific location, which could explain the strange behavior of the magnetic field in the South Atlantic.

Another aspect of the inside of the Earth is the inner core, which is a solid ball the size of Pluto beneath the outer core. This solid feature is slowly growing, but not at the same rate everywhere. There is a possibility that it is growing faster on one side, causing a flow inside the outer core that is reaching the outer boundary with the rocky mantle just under the Atlantic hemisphere. This may be causing irregular behavior of the magnetic field on the long timescales we found on Saint Helena.

Although there are still many questions about the exact cause of the irregular behavior in the South Atlantic, this study shows us that it has been around for millions of years and is most likely a result of geophysical interactions in the Earths mysterious interior.

Yael Annemiek Engbers, Ph.D. candidate, University of Liverpool and Andrew Biggin, Professor of Palaeomagnetism, University of Liverpool

This article is republished from The Conversation under a Creative Commons license. Read the original article.

Bottom line: Is Earth facing a magnetic pole reversal soon? Hear from the authors of a new study, on a strange anomaly that might be a clue.

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Are the Earths magnetic poles about to swap places? - EarthSky

Liberalism is fighting for its life. There is only one way to survive – The Guardian

You can be forgiven for not knowing theres a Liberal Democrat leadership contest going on. You can also, to a degree, be forgiven for not caring very much either. For the record, the candidates are the acting leader, Ed Davey, who is a green and a centrist, and the education spokeswoman, Layla Moran, who is more on the partys left. The result, due on 27 August, is likely to be met with almost total indifference outside the partys own ranks.

It isnt hard to see why. The Lib Dems have not recovered from the 2010-15 coalition. A decade ago they had 57 MPs. Today they have 11. Hopes of a revival in the 2019 election proved fanciful. Foolish enthusiasm for an early election, the failure of the partys Brexit revocation policy, Jo Swinsons heavy-footed leadership and some bad seat-targeting combined to roll that latest Lib Dem bandwagon back down to the bottom of the electoral hill.

Since the general election, things have got even tougher. The partys vote share has fallen to 8% in an average of recent UK polls (from 12% at the election). Keir Starmer has meanwhile begun rebuilding support for Labour that was lost, some of it to the Lib Dems, under Jeremy Corbyn. Crucially, much of the air has gone out of Brexit, on which the Lib Dems once sometimes seemed to speak for half of the British public.

Put all that together, and the Lib Dems seem almost a busted flush. Whether Davey wins or Moran, the next leader will be a marginal figure. And yet, in spite of that, the 2020 Lib Dem contest actually matters a lot more widely than this tale of unremitting Lib Dem party woe might suggest.

There are two principal reasons for saying this. The first is UK-specific, while the second is more global. Ironically, the first is the Lib Dems electoral influence. Eight per cent in the polls is dreadful. But it is an 8% that affects the rest of the inter-party battle. The Lib Dems stand in almost every UK seat. Three and a half million people voted for them last December. As long as that continues, the Lib Dems will be one factor alongside the Scottish National party in Scotland and Conservative inroads in England making a Labour victory under the winner-takes-all, first-past-the-post system much harder.

The second reason is not confined to Britain. Liberalism is fragmenting and in some respects retreating, here as elsewhere in the west. Many aspects of economic liberalism are under challenge, from recession and climate change, and especially from nationalism. Meanwhile, a raft of traditional moderate liberal values around conscience, tolerance and rights are also being confronted by forms of sometimes highly illiberal progressivism. The apparent post-cold war triumph of liberal capitalism is rapidly giving way to a variety of forms of post-liberalism in economics, politics and cultural life. In some of these, traditional liberalism is fighting for its life. There are multiple moments of reckoning.

One of these certainly affects the Lib Dems. But the same issues affect all other parties, and other institutions too, including universities, artistic life and most forms of the media. In Britain it is undoubtedly also true of the Labour party. The 2019 election result asked whether, in the wake of the Brexit divide and other stresses, a 21st-century Labour party can any longer achieve a winning coalition rooted both in liberal values and class politics. Starmer is trying to show that it can still be done by better leadership than preceded him. But in the face of the current fragmentation both of values and of class politics, as well as the revival of nationalism, it is an uphill task.

The political impact of all this on both Labour and the Lib Dems is existential. Both lay claim in different ways to being parties that can combine social justice goals and liberal values. So, it should also be added, do many important traditions within the Tory party, arguably including Boris Johnsons. But the balance between the two traditions that they all wish to appeal to is not stable.

A century ago, Labour was a working-class party with some middle-class supporters. Today it is increasingly the reverse. The tension between those who see Labour as a party of the poor and struggling, and those who see it as a party of liberal and progressive values, has a long history. But the coalition between them that worked in 1945, 1966 and 1997 came close to breaking apart in 2019 when significant numbers of English working-class former Labour voters turned to the Conservatives to deliver Brexit. It is hard to see it being reforged without significant compromises and moderation on both sides. Starmer gets this. Many in his party and beyond do not. In some parts of post-liberal politics, compromise and moderation are anathema and worse. This will not be easy.

It is made even more difficult by the electoral system. In potted histories of British politics since 1900, it is often said that Labour replaced the Liberals as the main rival of the Tories. So it did, in broad terms. But not in all ways. The Liberals never quite died, even after 1945. Their successor party is not dead today either. Since the 1970s, the Greens have become a third opposition option against the Conservatives.

Liberalism has many guises. Its crisis likewise takes multiple forms. The parties that draw on liberal traditions, or owe their existence to it, face a choice. They can either go on as before, each parading their own untarnishable virtue. Or they can try to fashion compromises within their own ranks and between one another. If they do the former, the Conservatives are well placed to go on defeating them, as they did to such effect in 2019. But if they choose cooperation and compromise, there may be a way back. The Lib Dem leadership contest may just help to decide which it will be.

Martin Kettle is a Guardian columnist

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Liberalism is fighting for its life. There is only one way to survive - The Guardian

BC Liberals won’t be in this year’s parade, the Vancouver Pride Society says – CTV News

VANCOUVER -- The Vancouver Pride Society says the Opposition BC Liberals won't be part of next month's virtual pride parade after failing to take action against a member of its caucus accused of homophobia and transphobia.

The society says it informed the party Tuesday and will look forward to hearing about how the Liberals plan to ensure all caucus members understand the harms of conversion therapy.

Chilliwack-Kent MLA Laurie Throness has come under fire for defending an article published in Light Magazine on the widely discredited practice that claims to change a person's sexual orientation or gender identity.

Throness also told CTV on July 3 that he planned to continue buying advertising in the Christian publication after Liberal leader Andrew Wilkinson said the party's advertising policy would be reviewed.

Although Wilkinson has said anti-discrimination is a condition of caucus membership, he has remained silent in response to calls for the removal of Throness from caucus or from his role as the critic for children and family development and childcare.

Pride society co-chair Michelle Fortin says she's disappointed that the Liberals aren't holding one another accountable and their offer of anti-discrimination training to the party hasn't been accepted.

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BC Liberals won't be in this year's parade, the Vancouver Pride Society says - CTV News

Woke wolves and the cowardly leaders of liberal America – New York Post

It isnt really about Bari Weiss.

The mob inside The New York Times didnt target Weiss, an opinion editor and writer there since 2017, for cancellation to get her specifically though her smart writing and editing surely didnt endear her to some of the third-rate digital-media hacks and talentless millennials who enjoyed the pursuit of this journalistic star on the rise due to their loathsome envy.

As Weiss detailed in a widely read public resignation letter on Tuesday, she left her job after constant bullying by more left-wing colleagues (the vast majority) that included underhanded gossip, anti-Semitic innuendo and public attacks against her that would never have been tolerated had she been the one meting them out.

She also described an atmosphere of pervasive ideological intimidation and conformity that finally made commissioning diverse viewpoints and writing and thinking freely essential to opinion journalism all but impossible.

So Weiss left. But again, it wasnt ultimately about her. The mobs real targets are twofold.

First, the mob yearns to scare into submission everyone in a position of authority at the Times and any other liberal institution in America who might think it wise to hire someone like Bari Weiss someone who draws outside the ideological lines and brings a fresh perspective.

You can see how this works in the cowardice manifested by Times publisher A.G. Sulzberger. As Weiss noted in her letter, Sulzberger praised her in private, even as he simultaneously failed to defend her in public from the threats and slanders of her own colleagues, both in internal communications and on Twitter. Such conduct marks the journalistic scion forevermore as less a man than a mouse.

Consider, too, that Weiss blistering resignation letter shows how Sulzberger and the Times leadership are likely guilty of several employment-related offenses, particularly in their refusal to intervene to end the hostile work environment in which she had found herself due at least in part to how she was being treated by colleagues as a member of a minority religion.

It should be said, right here, that Weiss, who is a friend of mine, is not a conservative. She calls herself a centrist, and as someone who has argued with her on matters of ideology, I can confirm this is an entirely fair description.

She is, however, versed in conservative thinking and argument and open to both. This is a thought-crime in woke circles.

Even more telling, she is a Zionist, a stout defender of Israel and someone willing to call out anti-Semitism on the left views that, in our garbage cultural and political movement, have become tragically unacceptable in many woke quarters.

She was targeted for holding these opinions and because she became well-known on TV and elsewhere for the eloquence with which she espouses them. Those who targeted her did so at her place of work and in public fora. And yet Sulzberger & Co. did not come to her defense or aid, even though their business was facing legal exposure, because it was safer for them to risk a Weiss lawsuit than to discipline those who had threatened her.

Why? Because they are more frightened of the mob. They are terrified of being subjected to the same treatment. Its that simple. Sulzberger let the wolves try to devour Weiss to save his own rich-boy hide. She refused to participate in her own sacrifice.

Which brings us to the mobs second object: The wokesters want to scare everyone who might emulate Bari Weiss in the future. And this, of course, is the real purpose of cancel culture. It is less about silencing the voice who is so annoying to the cancelers in the present and far more about silencing the perspective that voice represents in the future.

This goes far beyond The New York Times. It is an effort pervading every major cultural institution in America.

Against this generational menace, the milquetoast mandarins who run these places refuse to defend themselves, the principle of free expression or anything but the maintenance of their own jobs. Their surrender of all principle in pursuit of that lowly aim is a mark of just how morally, spiritually, politically, intellectually and practically decayed they and their organizations have become.

jpodhoretz@gmail.com

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Woke wolves and the cowardly leaders of liberal America - New York Post

UR #23: Investigating the Stellar Activity of FGK Dwarfs in the Dharma Planet Survey – Astrobites

The undergrad research series is where we feature the research thatyouredoing. If youve missed the previous installments, you can find themunder the Undergraduate Research category here.

Are you doingan REU thissummer? Were you working onanastro research project during this past school year? If you, too, have been working on a project that you want to share,we want to hear from you!Think youre up to the challenge of describing your research carefully and clearly to a broad audience, in only one paragraph? Then send us a summary of it!

You can share what youre doing by clickinghereand using the form provided to submit a brief (fewer than 200 words) write-up of your work. The target audience is one familiar with astrophysics but not necessarily your specific subfield, so write clearly and try to avoid jargon. Feel free to also include either a visual regarding your research or else a photo of yourself.

We look forward to hearing from you!

************

Francisco Mendez

University of Florida

Francisco Mendez is an alumnus from the University of Florida who recently graduated with a BS in Astrophysics. As part of his senior thesis, he worked with Dr. Jian Ge on detecting the stellar activity of FGK stars. The results of this research project were presented at the Undergraduate Research Symposium at the University of Florida and the AAS 236th meeting.

The detection of Earth-like exoplanets has now become a reality. With the new spectrographs, we can now detect small radial velocity (RV) signals caused by the gravitational pull of the planet(s) on the host star. However, as the mass of the planet drops, the RV signals get weaker. Small RV signals are contaminated by stellar phenomena known as stellar activity, and it can mimic the same periodic RV signals caused by the planet. Therefore, studying stellar activity is crucial for the detection of Earth-like planets.

Whether a RV signal is due to a planet or stellar activity can be distinguished by studying the stellar spectra. We are interested in measuring both magnetic cycles and stellar rotation periods for FGK type stars as part of our stellar activity analysis by using two activity indicators seen in the spectra: the H alpha line and the Ca Infrared Triplet (IRT) lines. The stellar spectra were taken from the Dharma Planet Survey, and this is the first in-depth analysis of stellar activity coming from this survey.

We analyze a sample of 23 stars and by computing the long-term variability of the activity indicators, we expect to detect the magnetic cycles of these stars. To visualize the long-term variability (magnetic cycle) we binned the nightly calculated indices every 150 days, so the short-term noise could be removed. In order to measure the significance in the long-term variability we used a statistical test, known as the F-test, to compare the scatter of the binned data with their uncertainties (see the figure). If the associated probability values (or p-values) were less than 5%, the long-term variability was considered significant. We identified the periodicity of the activity indicators using a Lomb-Scargle Periodogram to find the stellar rotation period.

Our observation time span is not long enough to cover whole magnetic cycles to measure the long-term variability. We were only able to distinguish three different parts of these cycles: Active, Quiet, or Transition phases. For significant long-term variability, 8 stars from the sample show significant variability in the H alpha index and 12 stars in the Ca IRT index. By considering both activity indicators, we were able to measure the rotation period of 12 stars. The most remarkable result is seen for the star HD 115043, for which we measured a rotation period of ~6 days in both activity indicators, matching literature values.

In summary, identifying periodic signals from stellar activity, especially due to rotation, gives confidence that other periodic signals are caused by Earth-like exoplanets. In future work, we will investigate additional activity indicators, including the Ca H & K lines in ultraviolet light, and compare them to those investigated here.

If you are an undergraduate that took part in an REU this summer and would like to share your research on Astrobites, please contact us atsubmissions@astrobites.org!

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UR #23: Investigating the Stellar Activity of FGK Dwarfs in the Dharma Planet Survey - Astrobites

Book excerpt: ‘How to Die in Space’ on the beauty and danger of nebulas – Space.com

Sure, space looks pretty, but just because it sparkles doesn't make it welcoming.

Because, as astrophysicist Paul Sutter realized when he began thinking about phenomena he wanted to write about to share his field with readers, high-energy astrophysics is pretty brutal up close. Dying stars, black holes, the vacuum of space, even unknown dangers like hostile aliens those fascinating-but-brutal scenarios became the beastly specimens catalogued in his new book, "How to Die in Space: A Journey Through Dangerous Astrophysical Phenomena" (Pegasus Books, 2020).

In the excerpt below, Sutter (whose writing you may recognize as a frequent contributor to Space.com) introduces planetary nebulas and explains why, while they're a perennial star of Hubble Space Telescope images, they're best admired from a distance. (Read an interview with Paul Sutter about the book.)

Related: Best space and sci-fi books for 2020

We've come to an interesting place in our journey through the galaxy.

We've broken out of our home solar system after dodging rogue asteroids, evading circuitry-frying coronal mass ejections from the sun, and simply accepting the flood of tiny cosmic rays constantly bombarding our delicate flesh.

Once we reached interstellar distances, we've seen stars born from clouds of vicious turbulence, and we encountered our first truly exotic creatures of this everlasting night that we call outer space: the black holes.

Those black holes are tombstones.

Markers. Memories of what once was. Almost-forgotten remnants of the past. The black holes of our galaxy used to be stars, shining with heat and light and warmth. Dead, gone now, generations ago. Their fusion finished, their hydrogen depleted, their spirit withered.

The stars of our universe will die, one by one. And those deaths are, to a number, nasty.

Many of the hazards that we're about to explore and explain will come from the variety of ways that stars can end their lives, and turn into other, far less pleasant, things.

Needless to say, it won't be pretty.

And when it comes to stars, everybody wants to go out with a bang. Make a big deal out of it. Sadly, not everybody can shine as brightly, as intensely, as ferociously as a supernova. Don't fret, eager explorer, we'll get to supernovas and other overly powerful explosions soon enough. It's best we start small, with weaker explosions and their consequences, and work out way up to the big leagues. Wouldn't want to get ahead of ourselves.

The Earth's own sun will die someday. Best to accept that fact now, deal with it, internalize it. When the moment comes you don't want to be caught off guard, your eggs half boiled, your grilled cheese sandwich only toasted on one side. We'll use the sun as a textbook lesson, so you won't be caught unawares in an unfamiliar system, so you won't pick a star to call home that will go giant on you in a thousand years.

All stars die. Some, the very largest, go out in a tremendous flash of energy, turning themselves inside out to light up the universe. Others, the smallest, slowly fade, never quite sputtering out, never making a scene, spending a trillion years tending to a weak fire.

The middle ones, like the sun, have the most miserable fates. Before they finally die, they become red and bloated, spewing out their innards through the local system. Spasm after spasm, they slowly lose themselves, leaving only a faint dying heart behind.

It's in these later years when they're most dangerous, when their violence overwhelms them, reducing any hapless inner planets to cinders.

Every year, old stars fade while new ones light up. A continuous cycle in the galaxy. Beautiful and poetic, really, except for the fact that when these stars go they cause mayhem and destruction for anybody unfortunate enough to live within their influence.

You can buy "How to Die in Space" on Amazon or Bookshop.org.

Follow us on Twitter @Spacedotcom and on Facebook.

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Book excerpt: 'How to Die in Space' on the beauty and danger of nebulas - Space.com

STARMUS Returns: The world-renowned festival supported by Stephen Hawking, Brian May and Alexei Leonov announces a landmark event dedicated to Mars in…

Armenia will showcase the world's great scientific minds and Rockstar talent in celebration of Mars exploration

YEREVAN, Armenia, July 22, 2020 /PRNewswire/ -- STARMUS, one of the world-scale science and art festivals will take place in September 2021 in Yerevan, Armenia, to celebrate science communication with world-class scientists, artists and astronauts.

STARMUS VI will be dedicated to Mars, from the very first Soviet MARS 3 and American MARINER 9 to the spectacular NASA missions and ambitious manned landing plans of Space X. It has been 50 years since MARS 3 performed the first soft landing on the Red Planet and sent back to the Earth the first data from its surface. The same year, in 1971, NASAs MARINER 9 became the first Orbiter around Mars. These milestones were followed by dozens of successful missions by NASA providing us with more accurate images and information from our neighbor in the Solar System. In the summer of 2020, three space agencies around the world plan to launch pioneering missions to arrive at Mars in 2021.

Following the established tradition, the Festival will address pressing issues and screen films about the exploration of Mars. Previous film screenings included the documentary Apollo 11 and The Spacewalker, a film about the legendary Russian astronaut and Starmus Board Member Alexei Leonov.

The festival will be held under the high patronage of the President of Armenia, Dr. Armen Sarkissian. The President has invited Starmus to Armenia during his invited speech in 2019 at the opening ceremony of Starmus V "A Giant Leap" in Zurich.

The Ministry of Education, Science, Culture and Sport of the Republic of Armenia (MoESCS) on behalf of the RA Government will support, and working in close partnership with the Ministry of High-Tech Industry of the Republic of Armenia make the festival an outstanding eventthus playing an important role in different educational, scientific and artistic activities of the festival.

As in the previous years, the sixth Starmus Festival will welcome to the stage world-class scientists, artists and astronauts to share breakthrough discoveries, reflect upon pressing questions and inspire new generations of scientists and explorers.

The Starmus Advisory board will announce a further line-up of speakers from art and music later this year. Nobel Laureate scientists Edvard Moser and Michel Mayor, Apollo 16 Moonwalker Charlie Duke, co-inventor of CRISPR gene-editing technology Emmanuelle Charpentier and "the father of ipod" and NEST founder Tony Fadell are among confirmed speakers. For more information visit http://www.starmus.com.

Photos available to download from: here

About Starmus

Since the very first Homo Sapiens looked up at a star-filled sky we have been awestruck by the vastness of the cosmos. Even today we remain humbled by the sheer immensity of space, especially as through our progress in physics and astronomy, we are now aware of the tremendous distances involved even to our closest neighbouring stars.

Created by Dr. Garik Israelian, astrophysicist at the Institute of Astrophysics of the Canary Islands (IAC) and Dr. Brian May, astrophysicist and the lead guitarist of the iconic rock band Queen, the Starmus Festival is a combination of science, art and music that has featured presentations from Astronauts, Cosmonauts, Nobel Prize Winners and prominent figures from science, culture, the arts and music.

Stephen Hawking and Alexei Leonov, together with the rock star and astrophysicist Dr. Brian May, worked to create the Stephen Hawking Medal for Science Communication, awarded to individuals and teams who have made significant contributions to science communication. Previous Stephen Hawking Medal winners include Elon Musk, Jean-Michel Jarre, Neil deGrasse Tyson, Brian Eno, Hans Zimmer and The Particle Fever documentary.

The Starmus Festivals join Nobel laureates, eminent researchers, astronauts, thinkers, men and women of science, culture, arts and music to share their knowledge and experiences in the common search for answers to the great questions of today.

http://www.starmus.com/

SOURCE STARMUS

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STARMUS Returns: The world-renowned festival supported by Stephen Hawking, Brian May and Alexei Leonov announces a landmark event dedicated to Mars in...

How old are we? Debate over the age of the universe just got a bit more complicated – CBC.ca

Another telescope is helping us better understand the age of the universe and its future.

Using the Atacama Cosmology Telescope (ACT) in Chile, a group of astronomers say their observations support an earlier estimate as to the age of the universe: 13.77 billion years, give or take 40 million years. Their paper was released on the pre-print publishing service arXiv.org on Wednesday and submitted to the Journal of Cosmology and Astroparticle Physics.

The estimate supports observations taken by the European Space Agency's Planck space telescope in the early 2010s.

Over the years, there have been other studies that have disputed that number. For example, in 2019, a study published in the journal Sciencesuggested the universe was 11.2 billion years old.

"For a half dozen years, I'd say even more ... within the past three years, there has been one conference after another all over the world completely focused on this issue where one group comes up and they say, 'Oh, this is what we get,' and the other group comes up and says, 'This is what we get," said Richard Bond, co-author of the paper and director of the Canadian Institute for Theoretical Astrophysics at the University of Toronto.

"We call it the Hubble tension."

Why isn't there a clear-cut answer?

It all comes down to the methods used to calculate the expansion of the universe.

In 1929, astronomer Edwin Hubble found that the universe is expanding. Ever since, scientists have attempted to calculate just how fast that's occurring. The rate of expansion is called the Hubble Constant.

But the challenge with determining the age of our universe which in turn helps us better understand not only its past but also its future is that there are a few methods used to make the calculations.

One involves looking at things that are relatively nearby, cosmologically speaking, such assupernovas (exploding stars) and a particular type of star that varies in brightness, called a Cepheid variable.

Yet another involves looking far, far back, to a time shortly after the universe came to be in particular at the cosmic microwave background radiation, or CMB, left over from the rapid birth of the universe, some 380,000 years following the Big Bang.

ACT also used this method, though from a ground-based telescope. But one advantage it had over Planck was the ability to better measure polarization of the CMB, which tells the scientists in what direction the light is moving. This allows it to be more precise.

Just how close were their findings to Planck's?

The space telescope put the rate of the expansion of the universe at 67.5 kilometres per second per megaparsec (one megaparsec is 3.26 million light years). The new findings put that at 67.6 kilometres per second per megaparsec.

"What ACT has done is taken away the option that the CMB measurements were just a fluke of some kind," said Mark Halpern, a professor at the University of British Columbia's department of physics and astronomy in Vancouver and co-author of the paper.

This is an important step, the authors say, in trying to determine whether astrophysicists truly understand the universe.

"If we want the universe to be consistent, then what we need to understand is: [Is] it that we have [something] we haven't accounted for in any of the measurements?Or is there some kind of new physics?" said Renee Hlozek, co-author and a professor of astrophysics at the Dunlap Institute at U of T's department of astronomy and astrophysics.

"Because it could be that we're living in a universe that looks a certain age close to us, but then either the expansion rate changes over time or there's exotic physics that means it's a different age."

Wendy Freedman is an astronomy professor at the University of Chicago's department of astronomy and astrophysicswho was not involved in the study. She also researches the expansion of the universeand has used a particular type of star a red giant as a method of calculating the expansion.

"I think it's a really superb piece of work," she said of the new paper. "It's a major study andlooking through the papers, they have paid a huge amount of attention to details and possible uncertainties and errors and run tests and checked through their data."

Freedman said while the data supports Planck, there's still something fundamental that we don't understand, something that the authors themselves acknowledge.

Butwith the new ground-based findings, they hope that this will be another piece in the puzzle in an attempt to understand what's going on in our universe in particular how it will ultimately cease to be.

"If we understand the age of the universe now, that can actually help us have a better view of how this is going to end," Hlozek said.

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How old are we? Debate over the age of the universe just got a bit more complicated - CBC.ca

Burst of gamma rays from 10 billion light years away offers glimpse into the early universe – The Next Web

A short gamma ray burst known to astronomers as SGRB181123B is the second most-distant well-established SGRB ever seen, and the most distant to ever known to display an optical afterglow. Examination of this object could reveal data about the behavior of the densest stars in the Universe at a time when our Universe was still in its adolescence.

Short gamma ray burst are incredibly short-lived events (sometimes lasting for a matter of hours before fading), occurring far from Earth. These characteristics combine to make these events notoriously difficult to detect and study.

The discovery of such an event nearly two years ago led to a hasty coalition oftelescopesaimed at the enigmatic object.

We certainly did not expect to discover a distant SGRB, as they are extremely rare and very faint. We perform forensics with telescopes to understand its local environment, because what its home galaxy looks like can tell us a lot about the underlying physics of these systems, saidDr. Wen-fai Fong, assistant professor in the Department of Physics and Astronomy at Northwestern University.

[Read: The Solar Orbiter just snapped the closest-ever pictures of the Sun]

On Thanksgiving night in 2018, astronomers found a feast of data from the Neil Gehrels Swift Observatory, revealing a previously-unseenSGRB. The team managing observations for the space-borne observatory contacted astronomers at one of the words greatest ground-based telescopes,Gemini Northon Mauna Kea in Hawaii.

It was unreal. I was in New York with my family and had finished having a big Thanksgiving dinner. Just as I had gone to sleep, the alert went off and woke me up. While somewhat of a nuisance, you literally never know when youll land a big discovery like this! I immediately triggered the Gemini observations and notified Kerry. Thankfully, she happened to be observing at Keck that night and was able to rearrange her original observing plan and repoint the telescope towards the SGRB, Wen-fai recalls.

The international Gemini Observatory (a program of NSFs NOIRLab), quickly confirmed the finding, utilizing their 8.1 meter telescope onMauna Kea. Astronomers there also dated the event to the teenage years of the Universe, less than four billion years after the Big Bang.

We took advantage of the unique rapid-response capabilities and exquisite sensitivity of Gemini North and its GMOS imager to obtain deep observations of the burst mere hours after its discovery. The Gemini images were very sharp, and allowed us to pinpoint the location to a specific galaxy, saidKerry Patersonof the Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA) at Northwestern University.

These observations were reinforced by data recorded at theW.M. Keck Observatoryin Hawaii and Multi-Mirror Telescope (MMT) at Fred Lawrence Whipple Observatory on Mount Hopkins in Arizona.

This was a triumph for this international collaboration of astronomers, quickly networking several observatories, to observe this short-lived event.

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Burst of gamma rays from 10 billion light years away offers glimpse into the early universe - The Next Web

Section Head, Nuclear Science & Advanced Technology in Oak Ridge, TN for Oak Ridge National Laboratory – Physics

Overview

We are seeking an R&D Section Head for Nuclear Science and Advanced Technology in the Physics Division. The Division builds on ORNL strengths to perform outstanding leadership research for the Nation in fundamental nuclear science, national security and related areas. Our focus is in the areas of novel Advanced Radiation Detector Development, Applied Data Science, Nuclear Structure Physics, Theoretical Physics and Nuclear Astrophysics

The Nuclear Science and Advanced Technology Section delivers foundational knowledge in nuclear science and astrophysics through world-leading theoretical and experimental studies, as well as associated radiation detection technologies for next generation nuclear solutions needed by the nation and the world.

Purpose

Provide Research and Development (R&D) leadership to a thematic area of science and technology that integrates several thematically aligned R&D groups consistent with ORNLs aspiration to be the worlds premier R&D institution and ORNLs science culture.

The R&D Section Head works closely with the Division Director and section Group Leaders to establish and implement the science and technology directions for the section; support the Group Leaders to ensure their success and the success of the R&D groups as world-recognized leaders in their fields; ensure that staff members understand business opportunities; identify links to current and future funding opportunities and R&D programs; develop and implement consistent processes for the peer-review of proposals consistent with lab standards; model proper Environment, Safety, Security, Health, and Quality practices; and ensure a diverse and inclusive work environment where every employee feels safe, heard and appreciateda workplace that sets an example for the broader community

Major Duties/Responsibilities:

Research

Scientists/engineers/analysts who have significantly advanced knowledge/technology in their respective field. Their work directly impacts the present or future of the laboratory in significant ways. Initiates, leads and performs R&D programs and initiatives on an ongoing basis.

Leadership

Service

Accountabilities:

Authorities:

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Section Head, Nuclear Science & Advanced Technology in Oak Ridge, TN for Oak Ridge National Laboratory - Physics

Security Screening Market Size, Growth Analysis by Key Manufacturers, Regions, Types and Applications, Forecast 20202026| Leidos, Nuctech, OSI…

LOS ANGELES, United States: The global Security Screening market is comprehensively analyzed in the report with the main objective of providing accurate market data and useful recommendations to help players to gain strong growth in future. The report is compiled by subject matter experts and experienced market analysts, which makes it highly authentic and reliable. Readers are provided with deep analysis of historical and future market scenarios to get sound understanding of market competition and other important aspects. The report offers exhaustive research on market dynamics, key segments, leading players, and different regional markets. It is a complete package of thorough analysis and research on the global Security Screening market.

Get PDF Sample Copy of Report: (Including Full TOC, List of Tables & Figures, Chart)https://www.qyresearch.com/sample-form/form/1776151/1980173/global-security-screening-industry

The competitive landscape of the global Security Screening market is broadly studied in the report with large focus on recent developments, future plans of top players, and key growth strategies adopted by them. The analysts authoring the report have profiled almost every major player of the global Security Screening market and thrown light on their crucial business aspects such as production, areas of operation, and product portfolio. All companies analyzed in the report are studied on the basis of vital factors such as market share, market growth, company size, production volume, revenue, and earnings.

Key Players Mentioned in the Global Security Screening Market Research Report: Leidos, Nuctech, OSI Systems, Smiths Detection, Safeway, CEIA, Astrophysics, Analogic, GARRETT, IWILDT, Lornet, Westminster, Security Centres International, Adani, Research Electronics International, Suritel

Global Security Screening Market by Type: X-ray Security Screening, Explosive Detection Security Screening, Metal Detectors Security Screening, Nonlinear Node Detector Security Screening

Global Security Screening Market by Application: Airport, Other Public Transportation, Large Stadium/Facility, Others

The report offers great insights into important segments of the global Security Screening market while concentrating on their CAGR, market size, market share, and future growth potential. The global Security Screening market is mainly segmented according to type of product, application, and region. Each segment in these categories is extensively researched to become familiar with their growth prospects and key trends. Segmental analysis is highly important to identify key growth pockets of a global market. The report provides specific information on the market growth and demand of different products and applications to help players to focus on profitable areas of the global Security Screening market.

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About Us:

QY Research established in 2007, focus on custom research, management consulting, IPO consulting, industry chain research, data base and seminar services. The company owned a large basic data base (such as National Bureau of statistics database, Customs import and export database, Industry Association Database etc), experts resources (included energy automotive chemical medical ICT consumer goods etc.

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Security Screening Market Size, Growth Analysis by Key Manufacturers, Regions, Types and Applications, Forecast 20202026| Leidos, Nuctech, OSI...

New view of old light adds twist to debate over universes age – EarthSky

A portion of a new picture of the oldest light in the universe, aka the cosmic microwave background. This part covers a section of the sky 50 times the moons width, representing a region of space 20 billion light-years across. Image via Atacama Cosmology Telescope/ ACT Collaboration/ Simons Foundation.

Written by Thomas Sumner for the Simons Foundation. Originally published July 15, 2020.

From a mountain high in Chiles Atacama Desert, astronomers with the National Science Foundations Atacama Cosmology Telescope (ACT) have taken a fresh look at the oldest light in the universe [otherwise known as the cosmic microwave background]. Their new observations plus a bit of cosmic geometry suggest that the universe is 13.77 billion years old, give or take 40 million years.

The new estimate matches the one provided by the standard model of the universe and measurements of the same light made by the Planck satellite. This adds a fresh twist to an ongoing debate in the astrophysics community, said Simone Aiola, first author of one of two new papers on the findings posted to arXiv.org.

In 2019, a research team measuring the movements of galaxies calculated that the universe is hundreds of millions of years younger than the Planck team predicted. That discrepancy suggested that a new model for the universe might be needed and sparked concerns that one of the sets of measurements might be incorrect. Aiola, a researcher at the Flatiron Institutes Center for Computational Astrophysics in New York City, commented:

Now weve come up with an answer where Planck and ACT agree. It speaks to the fact that these difficult measurements are reliable.

The age of the universe also reveals how fast the cosmos is expanding, a number quantified by the Hubble constant. The new measurements from the Atacama Cosmology Telescope suggest a Hubble constant of 67.6 kilometers per second per megaparsec. That means an object 1 megaparsec (around 3.26 million light-years) from Earth is moving away from us at 67.6 kilometers per second due to the expansion of the universe. This result agrees almost exactly with the previous estimate of 67.4 kilometers per second per megaparsec by the Planck satellite team, but its slower than the 74 kilometers per second per megaparsec inferred from the measurements of galaxies.

The Atacama Cosmology Telescope. Using new measurements from this telescope of the cosmic microwave background, scientists have refined calculations of the universes age. Image via Debra Kellner/ Simons Foundation.

Steve Choi of Cornell University, first author of the other paper posted to arXiv.org, said:

I didnt have a particular preference for any specific value. It was going to be interesting one way or another. We find an expansion rate that is right on the estimate by the Planck satellite team. This gives us more confidence in measurements of the universes oldest light.

The close agreement between the ACT and Planck results and the standard cosmological model is bittersweet, Aiola said:

Its good to know that our model right now is robust, but it would have been nice to see a hint of something new.

Still, the disagreement with the 2019 study of the motions of galaxies maintains the possibility that unknown physics may be at play, he said.

Like the Planck satellite, ACT peers at the afterglow of the Big Bang. This light, known as the cosmic microwave background, marks a time 380,000 years after the universes birth when protons and electrons joined to form the first atoms. Before that time, the cosmos was opaque to light.

If scientists can estimate how far light from the cosmic microwave background traveled to reach Earth, they can calculate the universes age. Thats easier said than done, though. Judging cosmic distances from Earth is hard. So instead, scientists measure the angle in the sky between two distant objects, with Earth and the two objects forming a cosmic triangle. If scientists also know the physical separation between those objects, they can use high school geometry to estimate the distance of the objects from Earth.

Subtle variations in the glow of the cosmic microwave background offer anchor points to form the other two vertices of the triangle. Those variations in temperature and polarization resulted from quantum fluctuations in the early universe that got amplified by the expanding universe into regions of varying density. (The denser patches would go on to form galaxy clusters.) Scientists have a strong enough understanding of the universes early years to know that these variations in the cosmic microwave background should typically be spaced out every billion light-years for temperature and half that for polarization. (For scale, our Milky Way galaxy is about 200,000 light-years in diameter.)

ACT measured the cosmic microwave background fluctuations with unprecedented resolution, taking a closer look at the polarization of the light. Suzanne Staggs, ACTs principal investigator and the Henry deWolf Smyth Professor of Physics at Princeton University, said:

The Planck satellite measured the same light, but by measuring its polarization in higher fidelity, the new picture from ACT reveals more of the oldest patterns weve ever seen.

As ACT continues making observations, astronomers will have an even clearer picture of the cosmic microwave background and a more exact idea of how long ago the cosmos began. The ACT team will also scour those observations for signs of physics that doesnt fit the standard cosmological model. Such strange physics could resolve the disagreement between the predictions of the age and expansion rate of the universe arising from the measurements of the cosmic microwave background and the motions of galaxies. Mark Devlin, ACTs deputy director and the Reese W. Flower Professor of Astronomy and Astrophysics at the University of Pennsylvania, said:

Were continuing to observe half the sky from Chile with our telescope. As the precision of both techniques increases, the pressure to resolve the conflict will only grow.

Bottom line: Astronomers have taken a fresh look at the oldest light in the universe, otherwise known as the cosmic microwave background. Their new observations suggest that the universe is 13.77 billion years old, give or take 40 million years.

Source: The Atacama Cosmology Telescope: DR4 Maps and Cosmological Parameters

Source: The Atacama Cosmology Telescope: A Measurement of the Cosmic Microwave Background Power Spectra at 98 and 150 GHz

Via the Simons Foundation

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New view of old light adds twist to debate over universes age - EarthSky

Scientists: mini-neptunes could be planets that have oceans of water – FREE NEWS

Many exoplanets known today are either super-Earths with a radius of 1.3 times the Earths radius, or mini-Neptune with 2.4 Earth radii. Mini-neptunes, which have always been less dense, have long been thought of as gaseous planets composed of hydrogen and helium. Now scientists from the Marseille Astrophysics Laboratory have explored the new possibility and presented their research in the Astrophysical Journal Letters.

Astrophysicists have suggested that the low density of mini-neptune-type planets can be explained simply by the presence of a thick layer of water, which is subject to an intense greenhouse effect.

Where does the greenhouse effect come from on these exoplanets? It is caused by radiation from a star whose radiation the planet is exposed to.

These results indicate that mini-neptuns may be super-Earths with a rocky core surrounded by supercritical water. Water takes on this state at very high pressures and temperatures. This study also suggests that two types of exoplanets super-earths and mini-neptune can form in the same way.

Another study, recently published in Astronomy & Astrophysics, looked at the effect of stellar radiation on the radius of Earth-sized planets containing water. French scientists from the Bordeaux Astrophysics Laboratory used a model of the planets atmosphere developed at the Laboratory of Dynamic Meteorology in their study.

Their results show that the size of the atmospheres of such planets increases significantly when they are exposed to a strong greenhouse effect, in accordance with studies of planets such as mini-neptune. Future observations should allow us to test these new hypotheses put forward by French scientists who are contributing to our knowledge of exoplanets.

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Scientists: mini-neptunes could be planets that have oceans of water - FREE NEWS

A new rover to land on Mars – ScienceBlog.com

The Mars 2020 mission is scheduled to launch at the end of July. Its goal is to land the Perseverance rover on the Red Planet and collect samples in the hope of finding signs of past life.

While Mars remains an inexhaustible source of inspiration for Hollywood films, it equally fascinates NASA, which has made its exploration a priority. Since the early 2000s, the US space agency has successfully carried out eight missionsdesigned to study its geological and climate history. The next step in this programme is the upcoming launch from Cape Canaveral of a massive Atlas V rocket carrying the Perseverance rover on a new mission dubbed Mars 2020, which will land on the Red Planet on 18 February 2021.

Packed with cameras and high-tech scientific instruments, the rover, approximately the size of a car, aims to answer the question that has been nagging the astrophysics community ever since the early days of Martian exploration: could Mars have once been home to life? After focusing on the presence of water on the planet and on its habitability, Mars 2020 marks the third and latest step in a series of missions, and will be primarily dedicated to the search for signs of fossil life, says Sylvestre Maurice, an astronomer at the IRAPin Toulouse (southwestern France). With the support of around 200 scientists, engineers and technicians from several CNRS and French university laboratories,the scientist helped develop the SuperCam laser camera, one of seven scientific instruments carried by the Perseverance rover. Based on many of the features of the Curiosity rovers ChemCam deployed on Mars in 2012, SuperCam was enhanced with new functionalities such as Raman and infrared spectrometers. These techniques, the first of their kind to be used on the Red Planet, can identify bonds between atoms and the way in which molecules are organised. As a result, they are able to detect complex structures favourable to the preservation of biosignatures in SuperCams targets, he explains.

To maximise their chances in the search for Martian biosignatures, the Mars 2020 team chose the Jezero crater as their landing site. Approximately 3.5 billion years ago, this area, 45 kilometres in diameter, was home to a vast lake to which several rivers converged, forming deltas whose remains are still visible today. The very early presence of water, together with extensive sedimentary deposits, makes Jezero a particularly promising environment for the detection of traces of life. The site also includes a wide range of geological features, which will help Mars 2020 achieve its other primary goal, namely the collection of some thirty soil core and rock samples reflecting the geological diversity of the planet. Once the samples have been enclosed in metal tubes kept inside the rover, they will be sealed and stored on the Martian surface, and eventually brought back to Earth during a future sample return mission scheduled by 2030, Maurice explains.

NASA/JPL-Caltech/MSSS/JHU-APL/ESA

This unprecedented sampling operation will be carried out using the SuperCam instrument. Its high-resolution colour camera attached atop Perseverances mast will make it possible to accurately determine the geological and environmental context associated with each sample of rock or regolith thanks to the analysis performed by the instruments three spectrometers.In addition, SuperCam will be the very first scientific instrument sent to Mars to be equipped with a microphone. By listening to the impact on the rocks each time the laser is fired, this system will provide information about the hardness of the geological samples targeted, Maurice says. The device will also be used to pick up the sound of the Martian wind and detect possible signs of wear and tear to the equipment by continuously recording the noises made by the rover.

Filled with cutting-edge technology, the SuperCam laser camera took five long years to develop by several French research laboratories. Although from the outside the instrument looks like Curiositys ChemCam, which our team had previously helped to design, it contains three additional analysis technologies packed into exactly the same volume. This required the miniaturisation of numerous components, explains Pernelle Bernardi, a systems engineer at the LESIA,in charge of the specifications and performance of the SuperCam. This was a major challenge that the French team met with flying colours. However, just as the production of the flight model to be mounted on the rover neared completion, things went badly wrong when the optical component of the instrument was being tested inside a heat chamber in November 2018. The temperature rose to nearly 250 C, well above the acceptable limits, quite literally roasting the instrument.

Following a crisis meeting with US mission officials and representatives from the French space agency, CNES,the decision was taken to rebuild the entire laser camera, using all the available spare parts. The French team worked flat out, day and night, and rebuilt the instrument in six months, even managing to enhance its performance. The primary mirror of the first SuperCams telescope had a tendency to deform when cold, which resulted in a significant widening of the focus point of the infrared laser beam, Bernardi explains. The November 2018 incident therefore gave us the opportunity to replace this defective mirror and thereby significantly improve the laser shot.

Completed in June 2019, the upgraded version of the SuperCam was then shipped to NASAs Jet Propulsion Laboratory in California in order to be attached to the top of the rover mast. We visited the site several times last year to ensure that the instruments laser beams were still perfectly aligned during tests carried out in an environment very close to that of Mars, and it was indeed the case, says Bernardi, who was awarded the CNRS 2020 Crystal Medal for her key role in the construction of the device. A few weeks before the Covid-19 crisis broke out, the fully-assembled rover had reached the Kennedy Space Center at Cape Canaveral and was docked to the descent vehicle. It was then placed in the capsule that will enter the Martian atmosphere, this structure being itself attached to the cruise stage, which will fly the entire system to its final destination. Sheltering behind its heat shield, Perseverance is now waiting for the green light from NASA to begin its long journey to Mars.

Originally posted here:

A new rover to land on Mars - ScienceBlog.com

Here’s why today’s Google Doodle is celebrating the Turkish astrophysicist Dilhan Eryurt – Morpeth Herald

Today's Google Doodle celebrates the life of Prof. Dr. Dilhan Eryurt (Image: Google)

Today's Google Doodle celebrates Dilhan Eryurt, a Turkish astrophysicist who played a huge role in the way we understand how the Sun was formed.

But who was she, what were some of her notable achievements, and why has Google chosen today to honour her?

Here's everything you need to know.

Who was Dilhan Eryurt?

Born in 1926 in zmir - Turkey's third most populous city - Prof. Dr. Dilhan Eryurt grew up across the country, first moving to Istanbul with her family, and then on to Turkey's second city, Ankara, a few years later.

After developing an interest in mathematics in high school, Eryurt enrolled in the Istanbul University Department of Mathematics and Astronomy, and upon graduation, was assigned to open an Astronomy Department at Ankara University.

She relocated to the US to continue her graduate studies at the University of Michigan, and while there completed her doctorate at the Ankara University Department of Astrophysics, becoming Associate Professor.

From 1961, Eryurt held a position at NASA's Goddard Space Flight Centre, her appointment extra notable for the fact she was the only female astronomer working at the institution at the time.

What did she study?

Eryurt's work at Goddard revealed some facts about the Sun that were not yet understood.

For instance, she observed that the brightness of the Sun had not increased - it had in fact decreased - since its formation 4.5 billion years ago, revealing that our nearest star was much brighter and warmer in the past.

Her studies influenced the course of the scientific and engineering research aims of space flights - a new and uncharted territory at the time.

In 1969 she was awarded the Apollo Achievement Award for contributions to the Apollo 11 mission. Today (20 July) marks 51 years since Buzz Aldrin, Neil Armstrong and Michael Collins landed and walked on the moon.

Aldrin and Armstrong spent a total of 21 hours and 36 minutes on the moon, but the Apollo 11 mission itself lasted a total of eight days, three hours, 18 min, and 35 seconds.

This is likely the reason Google have chosen today to celebrate Eryurt's life; her research provided NASA engineers with crucial information for modelling solar impact on the lunar environment

She later moved on to work at the California University, where she studied the formation and development of Main Sequence stars - a continuous band of stars that appear on plots of stellar colour versus brightness.

What else did she do?

Throughout her long and successful career, Eryurt became an award-winning astronomer, picking up all sorts of nods for her contributions and work.

Other notable achievements of hers include the organising of Turkey's first National Astronomy Congress in 1968, and the establishment of the Astrophysics Department at the Middle East Technical University.

She retired in 1993 after a long career, and sadly died in September 2012 at the age of 85, suffering a heart attack in Ankara.

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Here's why today's Google Doodle is celebrating the Turkish astrophysicist Dilhan Eryurt - Morpeth Herald

Exploring the Fundamental Mysteries of the Universe by Seeing the Invisible – SciTechDaily

Michael Troxel has always liked puzzles, especially challenging ones. Which is fortunate, since his job is solving some of the most perplexing, fundamental mysteries of the universe.

At some point in middle school I asked myself, Whats the hardest thing that I could try to do? he said. And at that point the hardest thing I knew about was astrophysics, so I think that was probably the first motivation for choosing this career, if Im honest. But that was before I understood what it actually meant.

A cosmologist and assistant professor in the Department of Physics, Troxel has spent the past two years as the cosmology analysis coordinator in the Dark Energy Surveyan international collaboration involving 500 scientists analyzing a massive dataset of about 400 million celestial objects. It has been what I think is one of the most complex and difficult analyses ever performed in cosmology, which has only been possible with the contributions and leadership of dozens of my colleagues, Troxel said. The outcome will span about 30 published research papers with more than 200 contributing scientists.

Today, in recognition of his contributions to the field, Troxel was granted an award through the Department of Energy Early Career Research Program. Founded to bolster the nations scientific workforce by providing support to exceptional researchers during crucial early career years, when many scientists do their most formative work, the program will support 76 scientists in 2020. It is a welcome validation that my time supporting this project has been well spent, Troxel said. It will also give my research group the resources to tackle some of the hardest problems we face in cosmology.

The award offers five years of funding for a specific project, which Troxel will partly use to support his work on a successor to the Dark Energy Survey: research using the Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST), which is scheduled to begin operations in 2023, within the Dark Energy Science Collaboration (DESC). Located in Cerro Pachon, Chile, the facility is one of the three large, state-of-the-art telescopes that will come online in the coming decade, including the Nancy Grace Roman Space Telescope that Troxels group also works with. Rubin and Roman will do many of the same things that the Dark Energy Survey does, but 10 times better, Troxel said.

This DES collaboration map of dark matter was made from gravitational lensing measurements. Credit: Chihway Chang/Kavli Institute for Cosmological Physics at the University of Chicago/DES Collaboration

All focus, in part, on the two most pressing cosmological mysteries left to solve: dark matter and dark energy. Theyre the pieces of the universe that we just dont understand, Troxel said. And a bit frighteningly, they seem to make up 95 percent of the universe.

The first, dark matter, is difficult to research because scientists have yet to see itit doesnt interact with light in the way ordinary matter does. But it does interact with gravity, and current astrophysical modelswhich have been very successful at predicting how the universe has evolvedimply that there is five times as much matter as we can see in the form of this dark matter.

Troxel specializes in gravitational lensing, or how gravity bends the path of light and distorts images of distant galaxies. By taking large-scale images of the universe from observatories like Rubin and Roman and analyzing those distortions, he can map where dark matter is located. Through the Dark Energy Survey, Troxel and others have made such maps for about an eighth of the sky. Rubin will allow them to map the entire southern hemisphere.

The other mystery, dark energy, involves the expansion of the universe. Since the Big Bang, all of the universes cosmological objects have been moving away from each other. Until the last few decades, scientists largely expected that the objects would slow down due to the gravitational force pulling them back together. But the opposite is happening.

What we observed is that instead of slowing down, everything is speeding up and accelerating away from each other, Troxel said. This is like throwing a ball up in the air and instead of having it fall back down, it starts shooting up faster and faster.

Duke cosmologists pose together. Troxel is third from left. Walter is to his right and Scolnic is the last on the right. Credit: Duke University

Since the acceleration is inexplicable through gravity from massive objects, scientists have concluded that there must be another force or component of the universe at play. In fact, this other component of the universe makes up 70 percent of the dynamics of the universe, Troxel said. It is also invisible to observation, but through gravitational lensing, Troxel and his colleagues can use data from the Rubin and other telescopes to learn more about it.

With the funding from his Department of Energy Award, Troxel said he will be able to hire another graduate student and postdoc to support Dukes cosmology research, which also includes professors Dan Scolnic and Chris Walter, expanding the departments recent focus on the field. One of the benefits for students is that they will have the opportunity to visit the observatory in Chile as the commissioning of Rubin starts.

Its those opportunities to support future scientists that are most meaningful to Troxel. A first-generation student, Troxel credits those who supported his career for his current success. My path to where I am now was not easy, and I only made it due to the support of my teachers and mentors, he said.

But he also hopes to welcome a more diverse group of students into cosmology. It was only last week [with the US Supreme Court ruling on Title VII], for the first time in my life, that I am protected at the national level from being fired from my job solely for who I am, said Troxel, who is LGBTQ.

The story of modern physics and cosmology has been one of turning around our perspectives and viewing the physical world in a new light, leading to fundamental new insights about how the world works, he added. Physics and cosmology benefit from new and diverse perspectives, but we must ensure that the field is worthy of those new voices. The most rewarding part of my role now as a teacher at Duke is to help make sure the next generation of diverse voices are heard and supported while they find their own paths to grappling with the mysteries of the universe.

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Exploring the Fundamental Mysteries of the Universe by Seeing the Invisible - SciTechDaily

Spacewatch: Black holes, comets and key dates – Cosmos

The release of the closest-ever images of the Sun understandably grabbed the headlines this week (you can read Richard A Lovetts report for Cosmos here) but there was other news of note. Here are some announcements that took our fancy.

Astronomers reported watching as a supermassive black holes own corona, the ultrabright, billion-degree ring of high-energy particles that encircles a black holes event horizon, was abruptly destroyed.

The cause is unclear, though they guess it was a star caught in the black holes gravitational pull. Like a pebble tossed into a gearbox, it may have ricocheted through the disc of swirling material, causing everything in the vicinity, including the coronas high-energy particles, to suddenly plummet into the black hole.

The result was a precipitous and surprising drop in the black holes brightness, by a factor of 10,000, in under just one year.

We expect that luminosity changes this big should vary on timescales of many thousands to millions of years, says Erin Kara, from Massachussetts Institute of Technlogy, but in this object, we saw it change by 10,000 over a year, and it even changed by a factor of 100 in eight hours, which is just totally unheard of and really mind-boggling.

Following the coronas disappearance, Kara and colleagues watched as the black hole began to slowly pull together material from its outer edges to reform its swirling accretion disc. In just a few months it was able to generate a new corona, with close to its original luminosity.

Journal abstract

Another group of astronomers at the Atacama Cosmology Telescope (ACT) in Chile took a fresh look at the oldest light in the Universe and, combining these observations with a bit of cosmic geometry suggest the Universe is 13.77 billion years old, give or take 40 million years.

The new estimate matches one provided by the Standard Model of the Universe and measurements of the same light made by the Planck satellite. This adds a fresh twist to an ongoing debate in the astrophysics community, says Simone Aiola, from the Centre for Computational Astrophysics in New York.

In 2019, a research team measuring the movements of galaxies calculated that the universe is hundreds of millions of years younger than the Planck team predicted. That discrepancy suggested that a new model for the Universe might be needed and sparked concerns that one of the sets of measurements might be incorrect.

Now weve come up with an answer where Planck and ACT agree, says Aiola. It speaks to the fact that these difficult measurements are reliable.

Journal abstract

Astrophysicists from Russia, South Korea and the US are suggesting that carbon is an indication of how long a comet has been in our Solar System; the less carbon, the longer its been in the proximity of the Sun.

The proof, they say, is the comet ATLAS (C/2019 Y4), which approached the Earth in May but disintegrated, displaying a major outbreak of the carbonaceous particles.

ATLAS was expected to be the brightest comet of 2020, visible from the Earth with a naked eye. However, instead of observing the comet itself, we witnessed its disintegration, says Ekaterina Chornaya, from Russias Far Eastern Federal University.

Luckily, we had begun photometric and polarimetric studies before the process started, and because of that, we are able to compare the composition of the coma before and after the disintegration.

The researchers say the polarimetric response of the particles from Comet ATLAS matches that of one of the brightest comets in the history of Earth Comet Hale-Bopp, or C/1995 O1.

Journal abstract

To finish, a couple of important dates were revealed this week.

The Japan Aerospace Exploration Agency (JAXA) and the Australian Space Agency jointly announced that the Hayabusa2 spacecraft containing samples from the asteroid Ryugu will arrive back on Earth in Woomera, South Australia, on 6 December this year. (You can read our most recent coverage of the mission here).

And NASA announced a new target date of 31 October 2021 for the launch of the James Webb Space Telescope from French Guiana. The ongoing coronavirus COVID-19 pandemic and technical challenges have required a move from the original planned launch in March.

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Spacewatch: Black holes, comets and key dates - Cosmos