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Daily Archives: December 25, 2014
President Obama Speaks with Shuttle, ISS Crews – Video
Posted: December 25, 2014 at 4:45 am
President Obama Speaks with Shuttle, ISS Crews
From the White House Oval Office, President Obama spoke with the four Atlantis astronauts of STS-135, the final space shuttle mission, and the six Expedition 28 residents of the International...
By: nkotova51 nkotova51
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President Obama Speaks with Shuttle, ISS Crews - Video
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Space: ISS cosmonauts get in the Christmas spirit – Video
Posted: at 4:45 am
Space: ISS cosmonauts get in the Christmas spirit
Russian cosmonauts Elena Serova, Anton Shkaplerov and Alexander Samokutyaev were getting ready to celebrate the festive season on the International Space Station (ISS), Wednesday. ----------------.
By: RuptlyTV
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3DInSpace – Video
Posted: at 4:45 am
3DInSpace
NASA created a 3D model of a tool that they emailed to the space station. This is that tool, printed on a 3D printer much like the one used on the space station to print theirs. http://spaceflightn...
By: The MakerHive YouTube Channel
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Stunning Time-Lapse Reveals Auroras and Earth From Space
Posted: at 4:45 am
As if Santa attached a GoPro camera to his sleigh, a new video reveals the Earth as few have seen it.
Published this week, the time-lapse shows stunning views of the Earth, sunrises, clouds, lightning, auroras, stars, and the International Space Station.
The video was made by European Space Agency astronaut Alexander Gerst, who stitched together 12,500 images captured during his six-month stay on the International Space Station, which orbits 250 miles (400 kilometers) above the surface. (See more aurora photos.)
The ultra-high-definition video "shows the best our beautiful planet has to offer," writes the European Space Agency.
Gerst set up cameras to record the celestial fireworks while he was conducting scientific experiments or helping dock vehicles during a mission called Blue Dot. (See more striking photos from the space station.)
Gerst returned to Earth on November 10, landing in the Kazakh Steppe in a Soyuz spacecraft with two other crew members. While in space he conducted 50 experiments, including installing a special furnace that cools molten metal in mid-air.
The third German to visit the International Space Station, Gerst is a volcanologist and geophysicist by training. (See photos of the space station.)
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Stunning Time-Lapse Reveals Auroras and Earth From Space
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Station Astronauts Send Christmas Greetings from the International Space Station
Posted: at 4:45 am
ISS astronauts Barry Butch Wilmore, NASA, Samantha Cristoforetti, ESA and Terry Virts, NASA send Christmas 2014 greetings from the space station to the people of Earth. Credit: NASA/ESA
There is a long tradition of Christmas greetings from spacefarers soaring around the High Frontier and this year is no exception!
The Expedition 42 crew currently serving aboard the International Space Station has decorated the station for the Christmas 2014 holiday season and send their greetings to all the people of Earth from about 240 miles (400 km) above!
Merry Christmas from the International Space Station! said astronauts Barry Wilmore and Terry Virts of NASA and Samantha Cristoforetti of ESA, who posed for the group shot above.
Italian astronaut Samantha Cristoforetti is in the holiday spirit as the station is decorated with stockings for each crew member and a tree. Credit: NASA/ESA
Its beginning to look like Christmas on the International Space Station, said NASA in holiday blog update.
The stockings are out, the tree is up and the station residents continue advanced space research to benefit life on Earth and in space.
And the six person crew including a trio of Russian cosmonauts are certainly hoping for a visit from Santa. Terry Virts even tweeted a picture of the special space style milk and cookies awaiting Santa and his Reindeer for the imminent arrival!
No chimney up here- so I left powdered milk and freeze dried cookies in the airlock. Fingers crossed, tweeted Virts.
No chimney up here- so I left powdered milk and freeze dried cookies in the airlock. Fingers crossed. Credit: NASA/Terry Virts
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Station Astronauts Send Christmas Greetings from the International Space Station
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2014s top space stories
Posted: at 4:45 am
By Miriam Kramer
Comet 67P/Churyumov-Gerasimenko as seen from the Rosetta orbiter on Nov. 20, 2014. The Philae lander soft-landed on the surface of the comet on Nov. 12.(ESA/Rosetta/NAVCAM CC BY-SA IGO 3.0)
From accidents to soaring daredevils to space capsules, 2014 was a big year in spaceflight.
Humanity soft-landed a probe on the face of a comet for the first time, while Virgin Galactic experienced a tragedy making it a bittersweet 12 months for people involved with space.
Here are Space.com's most important spaceflight stories of 2014:
NASA's Orion capsule debut
NASA successfully launched an uncrewed test of its Orion spacecraft, built to take humans to deep-space destinations like Mars or an asteroid, for the first time. The space capsule designed to carry four astronauts is the first spacecraft built by NASA to take humans to the Red Planet eventually.
Orion made two orbits of Earth during its approximately 4.5-hour test in early December. The flight was designed to help engineers test key systems onboard the spacecraft that could be needed during eventual crewed missions. The capsule reached an altitude of about 3,600 miles, marking the first time a NASA spacecraft built for humans has been out of low-Earth orbit in more than 40 years. [Images of Orion Test Flight]
NASA's Space Launch System the agency's mega rocket built to take Orion into deep space also hit a big milestone in 2014. Completing a critical design review that will allow engineers building the rocket to go forward.
Private rocket explodes after liftoff in Virginia
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2014s top space stories
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Let’s Play Sol 0-Mars Colonization #002 – Wir bauen weiter – Video
Posted: at 4:45 am
Let #39;s Play Sol 0-Mars Colonization #002 - Wir bauen weiter
In dieser Folge bauen wir weiter auf dem Mars. Wir stellen einen Methantank auf damit wir unsere Raumschiffe wieder zurck zur Erde schieen knnen und erlei...
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Let's Play Sol 0-Mars Colonization #002 - Wir bauen weiter - Video
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Researchers propose ballistic capture as cheaper path to Mars
Posted: at 4:45 am
20 hours ago by Bob Yirka Structure of the ballistic capture transfers to Mars. Credit: arXiv:1410.8856 [astro-ph.EP]
(Phys.org)Space scientists Francesco Topputo and Edward Belbruno are proposing in a paper they have written and uploaded to the preprint server arXiv, the idea of using ballistic capture as a means of getting to Mars, rather than the traditional Hohmann transfer approach. They suggest such an approach would be much cheaper and would allow for sidestepping the need for scheduling launch windows.
The traditional way to get to Mars is to calculate where the planet is going to be at a certain point in time and then launching a rocket to get there at the same timethis is known as the Hohmann transfer approach and it involves using retrorockets upon arrival to slow down as the rocket is sent as quickly as possible during its trip. Those retrorockets use up a lot of fuel which makes travel to the Red planet bulky and expensive. The Hohmann transfer approach also involves scheduling during optimal launch windowswhen the Earth and Mars are closet together, which can also cause problems if there is a delay for any reasonhaving to wait for another launch window can mean waiting up to two years. In their paper, Topputo and Belbruno suggest taking another approach altogetherinstead of aiming for the planet directly, they suggest aiming for a spot ahead of the planet in its orbit around the sun and waiting for the planet to catch upan approach known as ballistic capture.
Ballistic capture would eliminate the need for retrorockets, making a mission to Mars much cheaperbut it would also add months to the trip, which could be a problem for manned missions. For that reason, the researchers suggest it might best be used to send unmanned vehicles to the planet, some for observation and scientific purposes, others to send gear for use by humans once they arrive. Because such missions would not be time critical, they could be launched anytime, avoiding the necessity of launching during launch windows.
One drawback of the ballistic capture approach is that it does not lead to low orbit around the target planetsome sort of propulsion would still be needed to move into an orbit low enough for scientific study, or to get down to the surface itself. Such vehicles could carry some fuel for that purpose, the researchers suggest but it wouldn't take nearly as much as retrorockets used in the Hohmann transfer. The two are working with NASA contractor Boeing Corporation to further develop the idea to see if it might be feasible.
Explore further: The technological path to Mars
More information: EarthMars Transfers with Ballistic Capture, arXiv:1410.8856 [astro-ph.EP] arxiv.org/abs/1410.8856
Abstract We construct a new type of transfer from the Earth to Mars, which ends in ballistic capture. This results in a substantial savings in capture v from that of a classical Hohmann transfer under certain conditions. This is accomplished by first becoming captured at Mars, very distant from the planet, and then from there, following a ballistic capture transfer to a desired altitude within a ballistic capture set. This is achieved by manipulating the stable sets, or sets of initial conditions whose orbits satisfy a simple definition of stability. This transfer type may be of interest for Mars missions because of lower capture v, moderate flight time, and flexibility of launch period from the Earth.
via SciAm
2014 Phys.org
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Researchers propose ballistic capture as cheaper path to Mars
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Have mathematicians found a cheap and easy way to get to Mars? New theory plots route to use the red planet's gravity …
Posted: at 4:45 am
Current missions use rocket to slow themselves as they approach planets New, slower mission would be gradually 'grabbed' by martian gravity Wouldadd several months to mission - but make it cheaper Theory used in 1990 to put stricken Japanese probe into moon's orbit
By Mark Prigg for MailOnline
Published: 19:56 EST, 23 December 2014 | Updated: 20:11 EST, 23 December 2014
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Traditional missions to Mars involve large rockets for both blasting off and slowing down.
However, researchers believe there may be a simpler, cheaper way.
Rather than blasting to the red planet and using rockets to slow themselves down, future craft could simply use planetary gravity fields to 'drift' into the Martian atmosphere.
Called ballistic capture, the new method could help open the Martian frontier for more robotic missions, future manned expeditions and even colonization efforts, researchers say - and even Nasa is interested.
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Have mathematicians found a cheap and easy way to get to Mars? New theory plots route to use the red planet's gravity ...
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Human Genetics II – Video
Posted: at 4:44 am
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