Crystalline

Looking for all the world like a snowflake, this is actually a close up view of sodium chloride crystals. The crystals are in a water bubble within a 50-millimeter metal loop that was part of an experiment in the Destiny laboratory aboard the International Space Station and was photographed by the Expedition 6 crew.

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As The Crust Turns: Cassini Data Show Enceladus in Motion

Enceladus
Blobs of warm ice that periodically rise to the surface and churn the icy crust on Saturn's moon Enceladus explain the quirky heat behavior and intriguing surface of the moon's south polar region, according to a new paper using data from NASA's Cassini spacecraft.

"Cassini appears to have caught Enceladus in the middle of a burp," said Francis Nimmo, a planetary scientist at the University of California Santa Cruz and a co-author of the new paper in Nature Geoscience. "These tumultuous periods are rare and Cassini happens to have been watching the moon during one of these special epochs."

The south polar region captivates scientists because it hosts the fissures known as "tiger stripes" that spray water vapor and other particles out from the moon. While the latest paper, released on Jan. 10, doesn't link the churning and resurfacing directly to the formation of fissures and jets, it does fill in some of the blanks in the region's history.

"This episodic model helps to solve one of the most perplexing mysteries of Enceladus," said Bob Pappalardo, Cassini project scientist at NASA's Jet Propulsion Laboratory in Pasadena, Calif., of the research done by his colleagues. "Why is the south polar surface so young? How could this amount of heat be pumped out at the moon's south pole? This idea assembles the pieces of the puzzle."

About four years ago, Cassini's composite infrared spectrometer instrument detected a heat flow in the south polar region of at least 6 gigawatts, the equivalent of at least a dozen electric power plants. This is at least three times as much heat as an average region of Earth of similar area would produce, despite Enceladus' small size. The region was also later found by Cassini's ion and neutral mass spectrometer instrument to be swiftly expelling argon, which comes from rocks decaying radioactively and has a well-known rate of decay.

Melted Ice

Calculations told scientists it would be impossible for Enceladus to have continually produced heat and gas at this rate. Tidal movement – the pull and push from Saturn as Enceladus moves around the planet – cannot explain the release of so much energy.

The surface ages of different regions of Enceladus also show great diversity. Heavily cratered plains in the northern part of the moon appear to be as old as 4.2 billion years, while a region near the equator known as Sarandib Planitia is between 170 million and 3.7 billion years old. The south polar area, however, appears to be less than 100 million years old, possibly as young as 500,000 years.

Craig O'Neill of Macquarie University in Sydney, Australia, and Nimmo, who was partially funded by the NASA Outer Planets Research program, adapted a model that O'Neill had developed for the convection of Earth's crust. For Enceladus, which has a surface completely covered in cold ice that is fractured by the tug of Saturn's gravitational pull, the scientists stiffened up the crust. They picked a strength somewhere between that of the malleable tectonic plates on Earth and the rigid plates of Venus, which are so strong, it appears they never get sucked down into the interior.

Their model showed that heat building up from the interior of Enceladus could be released in episodic bubbles of warm, light ice rising to the surface, akin to the rising blobs of heated wax in a lava lamp. The rise of the warm bubbles would send cold, heavier ice down into the interior. (Warm is, of course, relative. Nimmo said the bubbles are probably just below freezing, which is 273 degrees Kelvin or 32 degrees Farenheit, whereas the surface is a frigid 80 degrees Kelvin or -316 degrees Farenheit.)

The model fits the activity on Enceladus when the churning and resurfacing periods are assumed to last about 10 million years, and the quiet periods, when the surface ice is undisturbed, last about 100 million to two billion years. Their model suggests the active periods have occurred only 1 to 10 percent of the time that Enceladus has existed and have recycled 10 to 40 percent of the surface. The active area around Enceladus's south pole is about 10 percent of its surface.

The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. JPL, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate in Washington. The Cassini orbiter was designed, developed and assembled at JPL.

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NASA to Check for Unlikely Winter Survival of Mars Lander

Phoenix Lander amid disappearing spring ice
Beginning Jan. 18, NASA's Mars Odyssey orbiter will listen for possible, though improbable, radio transmissions from the Phoenix Mars Lander, which completed five months of studying an arctic Martian site in November 2008.

The solar-powered lander operated two months longer than its three-month prime mission during summer on northern Mars before the seasonal ebb of sunshine ended its work. Since then, Phoenix's landing site has gone through autumn, winter and part of spring. The lander's hardware was not designed to survive the temperature extremes and ice-coating load of an arctic Martian winter.

In the extremely unlikely case that Phoenix survived the winter, it is expected to follow instructions programmed on its computer. If systems still operate, once its solar panels generate enough electricity to establish a positive energy balance, the lander would periodically try to communicate with any available Mars relay orbiters in an attempt to reestablish contact with Earth. During each communications attempt, the lander would alternately use each of its two radios and each of its two antennas.

Odyssey will pass over the Phoenix landing site approximately 10 times each day during three consecutive days of listening this month and two longer listening campaigns in February and March.

"We do not expect Phoenix to have survived, and therefore do not expect to hear from it. However, if Phoenix is transmitting, Odyssey will hear it," said Chad Edwards, chief telecommunications engineer for the Mars Exploration Program at NASA's Jet Propulsion Laboratory, Pasadena, Calif. "We will perform a sufficient number of Odyssey contact attempts that if we don't detect a transmission from Phoenix, we can have a high degree of confidence that the lander is not active."

The amount of sunshine at Phoenix's site is currently about the same as when the lander last communicated, on Nov. 2, 2008, with the sun above the horizon about 17 hours each day. The listening attempts will continue until after the sun is above the horizon for the full 24.7 hours of the Martian day at the lander's high-latitude site. During the later attempts in February or March, Odyssey will transmit radio signals that could potentially be heard by Phoenix, as well as passively listening.

If Odyssey does hear from Phoenix, the orbiter will attempt to lock onto the signal and gain information about the lander's status. The initial task would be to determine what capabilities Phoenix retains, information that NASA would consider in decisions about any further steps.

Mars Odyssey is managed for NASA's Science Mission Directorate by JPL, a division of the California Institute of Technology in Pasadena. Lockheed Martin Space Systems, Denver, is the prime contractor for the project and built the spacecraft.

The successful Phoenix mission was led by Peter Smith of the University of Arizona, Tucson, with project management at JPL and development partnership at Lockheed Martin. International contributions came from the Canadian Space Agency; the University of Neuchatel, Switzerland; the universities of Copenhagen and Aarhus in Denmark; the Max Planck Institute in Germany; the Finnish Meteorological Institute; and Imperial College, London.

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A NASA Mission to Iraq

Malcom Phelps stands near the Minister of Education’s Teacher Training Center in BaghdadA person who becomes part of the NASA team never knows where the journey may lead, from a spacecraft in orbit to an underwater habitat to Earth's extreme environments.

For Malcom Phelps, his experience with NASA led to Baghdad. There, in the war-torn capital of Iraq, he is part of a team involved in improving education infrastructure.

Specifically, Phelps is working with the Baghdad Provincial Reconstruction Team, or PRT. The team is a project of the United States government to work with Iraqi leaders to help rebuild the infrastructure in Iraq. Provincial Reconstruction Teams include members of the U.S. military and civilian specialists from the U.S. government who offer their expertise to assist local leaders. These teams have been key to improvements in security and governance in Iraq, and their success is now being replicated in Afghanistan.

Phelps, a NASA education official, is the senior education advisor for the Baghdad team. He joined NASA as the chief of education technology in 1991; he was promoted to associate director of the education division in 1995. He joined the Provincial Reconstruction Team in April 2008 and accepted a request to extend his tour for one year.

"I became interested in the team's work because of a desire to contribute to our country's effort to rebuild Iraq," Phelps said. "So many Americans made sacrifices, and I thought I could help. Many of our young soldiers have endured multiple combat tours, so the separation from family, the risk and the austerity have seemed like a relatively small sacrifice for me in comparison."

To join the team, Phelps contacted the U.S. Department of State, which accepted him as a member of the Provincial Reconstruction Team education team. When he was accepted, NASA, and its Office of Education, agreed to assign Phelps to work with the team in Iraq.

He said that he was proud to be representing the agency as a part of the PRT. "The NASA Education Office is therefore making a significant contribution to the U.S. reconstruction mission in Iraq," Phelps said. Education is an important focus for NASA, and domestically the agency works to attract and retain students in science, technology, engineering and mathematics disciplines and to strengthen its and the nation's future workforce.

Students proudly raise the Iraqi flag during the reopening ceremony of the Huda Girls School in Tarmiya, IraqWhen Phelps arrived in Iraq, the emphasis was on school reconstruction and supplies. Working with the Iraqi Ministry of Education, he supervised more than $20 million worth of school refurbishments. More than 200 schools were returned to service after they had been damaged in combat. Schools were the favored bases for the violent insurgency. Restoring them has provided the population with a tangible sign of progress while engaging young people in productive activity where they are less susceptible to propaganda. Phelps is especially proud of the reopening of a girls' school in rural Tarmiya. When he arrived in 2008, it had just been cleared of explosives, and there was a 4-foot hole in the wall of the principal's office made by an artillery round. The school now educates 500 girls and is the pride of the town.

Since being asked to lead the education effort in Baghdad, where four of Iraq's major universities are located, Phelps' focus has been on higher education. The team has worked to support a laboratory at Iraq's major engineering school that was the scene of destruction and looting only two years ago. He also has arranged for the U.S. engineering accreditation board to travel to Baghdad for an assessment to guide further progress. While numerous other projects are underway, such as training for English teachers, he is especially proud of being asked by the U.S. Embassy to plan and implement a program for Iraqi faculty that is preparing 200 of them to advise students about how to study in the U.S. "The students who are educated in the U.S. will return to Iraq and contribute to economic development and a hopeful future," Phelps said. With the improved security, collaborations with U.S. universities are now possible, and it's even conceivable that some can be facilitated through NASA programs such as the Space Grant consortium, he said.

When people think about NASA, places like the moon and Mars come to mind far more commonly than Baghdad. But Malcom Phelps' contribution in education to the reconstruction team is just one more way that the agency is improving life here on Earth and helping people to reach for the stars.

On the Web:
Expedition 22 Crew Members Salute the Troops ?
NASA Education


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NASA Chooses Student Teams to Drop Science Experiments

NASA has selected teams of middle school and high school students to test their science experiments in microgravity competitions that simulate the microgravity in space. High school students will participate in "Dropping In a Microgravity Environment," or DIME, and students in sixth through ninth grades in "What If No Gravity?" or WING.

DIME and WING challenge students to design and build a microgravity science experiment that is tested in a 2.2 second drop tower at NASA's Glenn Research Center in Cleveland. While in free fall, the students' experiments will experience microgravity conditions, as if they were on the International Space Station.

Four high school student teams were selected in the nationwide DIME competition. NASA will provide funding for up to four students and one adult advisor from each team to come to Glenn in April 2010 to conduct its experiment and review the results with Glenn engineers and scientists. While at the center, they will tour Glenn facilities and participate in workshops. Teams were selected from the following high schools:

- Glenbrook North High School in Northbrook, Ill.
- Plattsburgh High School in Plattsburgh, N.Y.
- St. Ursula Academy in Toledo, Ohio
- Tualatin High School in Tualatin, Ore.

Additional high school student teams selected in the DIME competition will ship their science experiments to NASA to be tested in the drop tower. The experiments and the resulting data will be returned to the teams so they can prepare reports about their findings. Additional DIME teams were selected from the following high schools:

Columbus High School in Columbus, Ga.
Emerson Preparatory School in Washington
Glenbrook North High School in Northbrook, Ill.
Northbrook High School in Houston
Troy Athens High School in Troy, Mich. (4 teams)

Student teams in sixth through ninth grades were selected for the WING competition. Each team will ship its experiment to Glenn for testing. The experiments and the resulting data will be returned to the teams so they can analyze the experiment results and submit a written report back to NASA. One student team not affiliated with a school was selected from within the community of Basking Ridge, N.J. Additional teams were selected from the following schools:

Crestwood Middle School in Mountaintop, Pa. (2 teams)
Dunstan Middle School in Littleton, Colo.
Gate of Heaven School in Dallas, Pa. (2 teams)
Good Shepherd Academy from the Diocese of Scranton in Kingston, Pa.
Hanover Area School District in Hanover Township., Pa. (2 teams)
Hazleton Area School District in Drums, Pa. (2 teams)
Lake-Lehman School District in Lehman, Pa.
Northwood Elementary School in Mooresville, Ind.
Smith Middle School in Troy, Mich.
Tunkhannock Area Middle School in Tunkhannock, Pa.
Wyoming Area Secondary Center in Exeter, Pa.
Wyoming Valley West School District in Kingston, Pa. (2 teams)

These and other NASA educational programs help the agency attract and retain students in science, technology, engineering and mathematics, disciplines critical to space exploration. The Teaching from Space Office at NASA's Johnson Space Center in Houston funds the DIME and WING competitions.

For information about NASA's DIME and WING student competitions, visit:

http://spaceflightsystems.grc.nasa.gov/DIME.html

For more information about NASA's education programs, visit:

http://www.nasa.gov/education

For information about NASA's Glenn Research Center, visit:

http://www.nasa.gov/glenn

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NASA’s Space Shuttle Crew in Washington, Available for Interviews

NASA Headquarters in Washington will welcome space shuttle Atlantis' STS-129 astronauts for a visit on Monday, Jan. 11, through Thursday, Jan. 14. The crew wrapped up an 11-day journey in space of nearly 4.5 million miles on Nov. 27.

Commander Charlie Hobaugh, Pilot Barry Wilmore, Mission Specialists Leland Melvin, Randy Bresnik, Mike Foreman and Bobby Satcher will share mission highlights with NASA employees, school children, college students and the general public while in the nation's capital. Reporters interested in covering the events or interviewing a crew member should contact NASA Public Affairs at 202-358-1100.

To kick off their visit, the crew will give a postflight presentation to NASA employees, their families and reporters at 10 a.m. EST, Monday, at NASA Headquarters' James E. Webb Auditorium, 300 E. Street, S.W. The crew's presentation will air live on NASA Television's education channel.

On Tuesday, Melvin and Satcher will present mission highlights from 9:30 to 10:30 a.m. at the Howard University School of Science and Mathematics on campus. For more information, please contact 2nd Lt. Janay Wilson at 202-806-6789.

The crew also will attend the Washington Wizards game against the Detroit Pistons on Tuesday at the Verizon Center. They will participate in pregame activities and view the game, which is scheduled to begin at 7 p.m. The astronauts will bring with them an NBA jersey that was flown on their shuttle flight. The jersey is expected to be returned to the NBA during the All-Star game in Dallas.

Wilmore, Foreman, Bresnik and Melvin will give a public presentation about their spaceflight from 10:30 a.m. to noon on Thursday at the National Air and Space Museum's new "Moving Beyond Earth" exhibit. The audience will consist of 250 students (grades 6th through 12th), visitors, employees and invited guests.

The STS-129 shuttle mission included three spacewalks and the installation of two platforms to the International Space Station's truss, or backbone. The platforms hold large spare parts to sustain station operations after the shuttles are retired. The shuttle crew delivered about 30,000 pounds of replacement parts for systems that provide power to the station, keep it from overheating, and maintain a proper orientation in space.

For NASA TV schedule information and links to streaming video, visit:

http://www.nasa.gov/ntv

For more information about the STS-129 mission, visit:

http://www.nasa.gov/shuttle

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Jupiter’s Moons

On Jan. 7, 1610, Galileo Galilei's improvements to the telescope enabled humanity to see Jupiter's four largest moons for the first time. Io, Europa, Ganymede and Callisto--the so-called Galilean satellites--were seen by the Long Range Reconnaissance Imager on the New Horizons spacecraft during its flyby of Jupiter in late February 2007. The images have been scaled to represent the true relative sizes of the four moons and are arranged in their order from Jupiter.

Io is notable for its active volcanism, which New Horizons studied extensively. On the other hand, Europa's smooth, icy surface likely conceals an ocean of liquid water. New Horizons obtained data on Europa's surface composition and imaged subtle surface features, and analysis of these data may provide new information about the ocean and the icy shell that covers it.

New Horizons spied Ganymede from 2.2 million miles away. Ganymede, the largest moon in the solar system, has a dirty ice surface cut by fractures and peppered by impact craters. New Horizons' infrared observations may provide insight into the composition of the moon's surface and interior.

Scientists are using the infrared spectra New Horizons gathered of Callisto's ancient, cratered surface to calibrate spectral analysis techniques that will help them to understand the surfaces of Pluto and its moon Charon when New Horizons passes them in 2015.

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NASA Supports President’s Summer Of Innovation

President Barack Obama annouces the Summer of Innovation at the White House on Jan. 06, 2010NASA has launched an initiative to use its out-of-this-world missions and technology programs to boost summer learning, particularly for underrepresented students across the nation. NASA's Summer of Innovation supports President Obama's Educate to Innovate campaign for excellence in science, technology, engineering and mathematics, or STEM, education.
› Transcript: President Obama's Remarks?

The Summer of Innovation program will work with thousands of middle school teachers and students during multi-week programs in the summer of 2010 to engage students in stimulating math and science-based education programs. NASA's goal is to increase the number of future scientists, mathematicians, and engineers, with an emphasis on broadening participation of low-income, minority students.

"This is an incredible opportunity for our administration to come together to address our nation's critical science, technology, engineering and math education needs," said NASA Administrator and former astronaut Charles F. Bolden. "Through Summer of Innovation, NASA is calling on our financial and human resources to align with federal, state, and local governments, nonprofit partners, universities and teachers to expand the opportunity for more of our young people to aspire to and engage in the future prosperity of our nation."

Through competitive cooperative agreements to states, and partnerships with companies and nonprofits, NASA will use its substantial STEM assets -- including the agency's scientists and engineers -- to create multi-week summer learning programs.

"NASA's Summer of Innovation will increase the scope and scale of the agency's commitment to a robust program of STEM education opportunities," said Joyce Winterton, assistant administrator for education at NASA Headquarters in Washington.

President Barack Obama helps a student with a science experiment in Summer 2009The Summer of Innovation pilot will infuse NASA content and products into existing, evidence-based summer learning programs at the state level coupled with design competitions and events open to students and teachers nationwide. The program will culminate in a national event, in partnership with other departments and agencies.

NASA will use the Summer of Innovation as a catalyst to expand, align, and strengthen existing state-based networks. Awardees will be expected to implement the Summer of Innovation program and services during 2010 through the strategic infusion of NASA content and products into existing, evidence-based summer learning programs. The pilot program will seek to improve STEM performance for a diverse population of students, placing them on a trajectory to pursue further studies in STEM fields throughout their education.

Contingent upon the availability of funding, NASA intends to competitively select district partnerships in up to seven states to pilot the Summer of Innovation during 2010. Awards will have a period of performance of 36 months. Local programs will be required to develop ways to keep students and teachers engaged during the school year and to track student participants' performance through 2012. Awardees will be encouraged to leverage the unique capabilities and resources of program partners to ensure a sustainable effort following the period of performance.

NASA will use the agency's National Space Grant College and Fellowship Program to implement the Summer of Innovation pilot. The Space Grant national network includes more than 850 affiliates from universities, colleges, industry, museums, science centers, and state and local agencies supporting and enhancing science and engineering education, research and public outreach efforts for NASA's aeronautics and space projects. These affiliates belong to one of 52 consortia in all 50 states, the District of Columbia and the Commonwealth of Puerto Rico.

Space Grant applications will be selected based on alignment with Summer of Innovation goals and objectives. Accordingly, NASA has determined that submitters for this opportunity must be Space Grant Lead Institutions, and only one proposal per state will be accepted.

The Summer of Innovation Notice of Intent will be available online at 3 p.m. EST at http://nspires.nasaprs.com and http://www.grants.gov.

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Galaxy History Revealed in Colorful Hubble View

Hubble mosaic image of thousands of galaxies NASA, ESA, R. Windhorst, S. Cohen, and M. Mechtley (Arizona State University, Tempe), R. O'Connell (University of Virginia), P. McCarthy (Carnegie Observatories), N. Hathi (University of California, Riverside), R. Ryan (University of California, Davis), and H. Yan (Ohio State University). Photo No. STScI-PRC10-01
› Larger image

More than 12 billion years of cosmic history are shown in this unprecedented, panoramic, full-color view of thousands of galaxies in various stages of assembly.

This image, taken by NASA's Hubble Space Telescope, was made from mosaics taken in September and October 2009 with the newly installed Wide Field Camera 3 (WFC3) and in 2004 with the Advanced Camera for Surveys (ACS). The view covers a portion of the southern field of a large galaxy census called the Great Observatories Origins Deep Survey (GOODS), a deep-sky study by several observatories to trace the evolution of galaxies.

The final image combines a broad range of colors, from the ultraviolet, through visible light, and into the near-infrared. Such a detailed multi-color view of the universe has never before been assembled at such a level of clarity, accuracy, and depth.

Hubble's sharp resolution and new color versatility, produced by combining data from the two cameras, is allowing astronomers to sort out the various stages of galaxy formation. The image reveals galaxy shapes that appear increasingly chaotic at each earlier epoch, as galaxies grew through accretion, collisions, and mergers. The galaxies range from the mature spirals and ellipticals in the foreground, to smaller, fainter, irregularly shaped galaxies, most of which are farther away, and therefore existed farther back in time. These smaller galaxies are considered the building blocks of the larger galaxies we see today.

Astronomers are using this multi-color panorama to trace many details of galaxy evolution over cosmic time, including the star-formation rate in galaxies, the rate of mergers among galaxies, and the abundance of weak active galactic nuclei.

The image shows a rich tapestry of 7,500 galaxies stretching back through most of the universe's history. The closest galaxies seen in the foreground emitted their observed light about a billion years ago. The farthest galaxies, a few of the very faint red specks, are seen as they appeared more than 13 billion years ago, or roughly 650 million years after the Big Bang. This mosaic spans a slice of space that is equal to about a third of the diameter of the full Moon (10 arc minutes).

The new Hubble view highlights a wide variety of stages in the galaxy assembly process. Ultraviolet light taken by WFC3 shows the blue glow of hot, young stars in galaxies teeming with star birth. The orange light reveals the final buildup of massive galaxies about 8 to 10 billion years ago. The near-infrared light displays the red glow of very distant galaxies -- in a few cases as far as 12 billion to 13 billion light-years away-whose light has been stretched, like a toy Slinky, from ultraviolet light to longer -- wavelength infrared light due to the expansion of the universe.

In this ambitious use of Hubble's observing time, astronomers used 100 Hubble orbits to make the ACS optical observations of this slice of the GOODS field and 104 orbits to make the WFC3 ultraviolet and near-infrared exposures. WFC3 peered deeper into the universe in this study than comparable near-infrared observations from ground-based telescopes. This set of unique new Hubble observations reveals galaxies to about 27th magnitude in brightness.

The Hubble Space Telescope is a project of international cooperation between NASA and the European Space Agency. NASA's Goddard Space Flight Center manages the telescope. The Space Telescope Science Institute conducts Hubble science operations. The institute is operated for NASA by the Association of Universities for Research in Astronomy, Inc. in Washington.

Related Link

› Related images and information from Hubblesite.org

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Planets Can Form Around Hefty Stars

This artist's conception shows a Jupiter-sized planet forming from a disk of dust and gas surrounding a young, massive star.
This artist's conception shows a Jupiter-sized planet forming from a disk of dust and gas surrounding a young, massive star. The planet's gravity has cleared a gap in the disk. Of more than 500 stars examined in the W5 star-forming region, 15 show evidence of central clearing that may be due to forming planets.
Most searches for planets around other stars, also known as exoplanets, focus on sun-like stars. Those searches have proven successful, turning up more than 400 alien worlds. However, sun-like stars aren't the only potential homes for planets. New research from NASA's Spitzer Space Telescope and the Two Micron All-Sky Survey confirms that planet formation is a natural by-product of star formation, even around stars much heftier than the sun.

For more details, please go to http://www.cfa.harvard.edu/news/2010/pr201001.html .

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NASA’s WISE Eye Spies First Glimpse of the Starry Sky

Infrared snapshot of a region in the constellation Carina near the Milky Way taken shortly after NASA's Wide-field Infrared Survey Explorer (WISE) ejected its cover.

NASA's Wide-field Infrared Survey Explorer, or WISE, has captured its first look at the starry sky that it will soon begin surveying in infrared light.

Launched on Dec. 14, WISE will scan the entire sky for millions of hidden objects, including asteroids, "failed" stars and powerful galaxies. WISE data will serve as navigation charts for other missions, such as NASA's Hubble and Spitzer Space Telescopes, pointing them to the most interesting targets the mission finds.

A new WISE infrared image was taken shortly after the space telescope's cover was removed, exposing the instrument's detectors to starlight for the first time. The picture shows about 3,000 stars in the Carina constellation and can be viewed online at http://www.nasa.gov/mission_pages/WISE/multimedia/wise20100106.html .

The image covers a patch of sky about three times larger than the full moon, and was presented today at the 215th meeting of the American Astronomical Society in Washington. The patch was selected because it does not contain any unusually bright objects, which could damage instrument detectors if observed for too long. The picture was taken while the spacecraft was staring at a fixed patch of sky and is being used to calibrate the spacecraft's pointing system.

When the WISE survey begins, the spacecraft will scan the sky continuously as it circles the globe, while an internal scan mirror counteracts its motion. This allows WISE to take "freeze-frame" snapshots every 11 seconds, resulting in millions of images of the entire sky.

"Right now, we are busy matching the rate of the scan mirror to the rate of the spacecraft, so we will capture sharp pictures as our telescope sweeps across the sky," said William Irace, the mission's project manager at NASA's Jet Propulsion Laboratory in Pasadena, Calif.

To sense the infrared glow of stars and galaxies, the WISE spacecraft cannot give off any detectable infrared light of its own. This is accomplished by chilling the telescope and detectors to ultra-cold temperatures. The coldest of WISE's detectors will operate at less than 8 Kelvin, or minus 445 degrees Fahrenheit.

The first sky survey will be complete in six months, followed by a second scan of one-half of the sky lasting three months. The mission ends when the frozen hydrogen that keeps the instrument cold evaporates away, an event expected to occur in October 2010.

Preliminary survey images are expected to be released six months later, in April 2011, with the final atlas and catalog coming 11 months later, in March 2012. Selected images will be released to the public beginning in February 2010.

JPL manages WISE for NASA's Science Mission Directorate in Washington. The mission was competitively selected under NASA's Explorers Program, managed by NASA's Goddard Space Flight Center in Greenbelt, Md. The science instrument was built by the Space Dynamics Laboratory in Logan, Utah, and the spacecraft was built by Ball Aerospace & Technologies Corp. in Boulder, Colo. Science operations and data processing take place at the Infrared Processing and Analysis Center at the California Institute of Technology in Pasadena.

More information is online at http://www.nasa.gov/wise and http://wise.astro.ucla.edu.

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NASA Shuttle at Launch Pad for Final Scheduled Night Launch; Crew Set to Arrive for Practice Liftoff

After reaching its launch pad at NASA's Kennedy Space Center in Florida Wednesday, space shuttle Endeavour now awaits its next major milestone for the upcoming STS-130 mission. Reporters are invited to cover the launch dress rehearsal, known as the Terminal Countdown Demonstration Test, or TCDT, scheduled to take place at Kennedy from Jan. 19 to 21.

Endeavour arrived at Launch Pad 39A at 8:45 a.m. EST Wednesday on top of a giant crawler-transporter. The crawler-transporter left Kennedy's Vehicle Assembly Building at 4:13 a.m., traveling less than 1 mph during the 3.4-mile journey. The shuttle was secured on the pad at 10:37 a.m.

With Endeavour on the pad, the STS-130 astronauts and ground crews can participate in the practice countdown and related training starting Jan. 19. The rehearsal provides each shuttle

Journalists must apply for credentials by noon Friday, Jan. 8, to cover the TCDT.

Reporters requesting accreditation must apply online at:

crew with an opportunity to participate in various simulated countdown activities, including equipment familiarization and emergency training.

https://media.ksc.nasa.gov

Times for TCDT activities still are being finalized. Activities available for media coverage will include:

- Jan. 19: STS-130 crew arrival. The astronauts will arrive in the Shuttle Training Aircraft and T-38 jets at Kennedy's Shuttle Landing Facility. Crew arrival will be broadcast live on NASA Television.

- Jan. 20: Crew media availability. The crew will take questions from reporters at Launch Pad 39A. The session will be carried live on NASA TV.

- Jan. 21: Crew walkout photo opportunity. The astronauts will depart from the Operations and Checkout Building in their flight entry suits in preparation for the countdown demonstration test at the launch pad. The walkout will not be broadcast live, but will air on NASA TV's Video File.

Updates with times for all events will be available by calling 321-867-2525.

The six astronauts for Endeavour's STS-130 mission will deliver a third connecting module, the Tranquility node, to the International Space Station. Endeavour's Feb. 7 target liftoff is at 4:39 a.m., making it the final scheduled space shuttle night launch.

NASA TV downlink information, schedules and links to streaming video, visit:

http://www.nasa.gov/ntv

For more information about the space station and its crew, visit:

http://www.nasa.gov/station

For more information about the STS-130 mission and crew, visit:

http://www.nasa.gov/shuttle

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NASA Sets Jan. 11 Briefing to Preview Upcoming Spacewalk, Soyuz Relocation and Other January Space Station Milestones

NASA officials will discuss an upcoming spacewalk by two Russian cosmonauts, the relocation of a Soyuz spacecraft to a new docking port and other International Space Station activities during a briefing at 1 p.m. CST on Monday, Jan. 11. The briefing will take place at NASA's Johnson Space Center in Houston and will be broadcast live on NASA Television and the agency's Web site. Reporters at participating NASA centers may ask questions.

The briefing participants are:
- Pete Hasbrook, Expedition 22 increment manager, Johnson Space Center
- David Korth, Expedition 22 lead flight director, Johnson Space Center

On Thursday, Jan. 14, Expedition 22 cosmonauts Oleg Kotov and Max Suraev will don Russian spacesuits for a six-hour spacewalk. They will prepare a new docking port and airlock named Poisk for use. NASA TV coverage of the spacewalk will begin at 3:30 a.m. Kotov and Suraev are expected to exit the Pirs airlock to begin their work at 4:10 a.m.

On Thursday, Jan. 21, Suraev and Expedition 22 Commander Jeff Williams will move their Soyuz TMA-16 spacecraft from the Zvezda Service Module port to the new Poisk module port. NASA TV coverage of the Soyuz undocking and redocking will begin at 3:45 a.m.

Briefers also will discuss the relocation of a spare parts platform on the outside of the station and the move from the Unity node to the Harmony node of the Pressurized Mating Adapter-3. The adapter is used to interconnect spacecraft and modules with different docking mechanisms. Hasbrook and Korth also will discuss the first use of the Poisk module.

For NASA TV downlink information, schedule information and streaming video, visit:

http://www.nasa.gov/ntv

For information about the station, visit:

http://www.nasa.gov/station

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Sun Glints Seen from Space Signal Oceans and Lakes

In two new videos from NASA’s Deep Impact spacecraft, bright flashes of light known as sun glints act as beacons signaling large bodies of water on Earth. These observations give scientists a way to pick out planets beyond our solar system (extrasolar planets) that are likely to have expanses of liquid, and so stand a better chance of having life.

These sun glints are like sunshine glancing off the hood of a car. We can see them reflecting off a smooth surface when we are positioned in just the right way with respect to the sun and the smooth surface. On a planetary scale, only liquids and ice can form a surface smooth enough to produce the effect—land masses are too rough—and the surface must be very large. To stand out against a background of other radiation from a planet, the reflected light must be very bright. We won’t necessarily see glints from every distant planet that has liquids or ice.

“But these sun glints are important because, if we saw an extrasolar planet which had glints that popped up periodically, we would know that we were seeing lakes, oceans or other large bodies of liquid, such as water,” says Drake Deming, of NASA’s Goddard Space Flight Center in Greenbelt, Md. Deming is the deputy principal investigator who leads the team that works on the Extrasolar Planet Observations and Characterization (EPOCh) part of Deep Impact’s extended mission, called EPOXI. “And if we found large bodies of water on a distant planet, we would become much more optimistic about finding life.”

One of EPOCh’s goals is to observe the Earth from far away—in this case, about 11 million miles away—so that we know what an Earth-like planet would look like when viewed from our spacecraft. The images in these videos were collected when the spacecraft was close enough to resolve some of Earth’s features, but at the same time, Earth could be treated as a very distant, single point. “This allows us to properly simulate what we would have observed if Earth were an extrasolar planet,” says Michael A’Hearn, principal investigator for EPOXI.

The researchers expected to see the sun glints but were surprised by the intensity and small focus of some, says Goddard’s Richard K. Barry. Glints appeared over oceans, most likely in relatively calm patches, and over a few land masses, probably caused by large inland lakes. Barry, who is leading the Earth-glint research effort, is putting together a catalog that will relate each glint to an exact location on Earth.

Together, the new videos provide the first view of Earth for a full rotation from the north pole (shown in one video) and south pole (the second video). The resolution is high enough to distinguish land masses, bodies of water and clouds. Each 16-second video is a compilation of a series of green, blue and near-infrared images taken every 15 minutes on a single day. Each is also the end product of months of planning, sophisticated data processing and analysis by the team.

The choice of infrared light, which is beyond the range of human sight, instead of visible red produces a better contrast between land and water. “People think of land as being greenish, but that’s because our eyes aren’t sensitive in the infrared,” Deming explains. “Vegetation actually shows up better in the infrared.”

Seen from very far away, Earth looks like a blue dot. “But the blue comes from Rayleigh scattering in our atmosphere rather than from the oceans,” says Nicolas Cowan, an EPOCh team member at the University of Washington. “That means that our planet appears blue even to an observer located above the North Pole, despite the fact that there isn’t always much ocean in sight. As Earth spins, different surface features rotate in and out of view, causing the color of the blue dot to change slightly from one hour to the next.”

For an observer above the pole, most of the visible part of Earth is covered in snow, ice and clouds. From far away, these appear grayish and are hard to tell apart because they are all basically water molecules in different forms. “But when a large expanse of bare land, like the Sahara Desert, rotates into view, Earth gets a bit redder because continents reflect near infrared light relatively well,” Cowan explains.

Given just this limited amount of information, the researchers could begin to describe an extrasolar planet’s surface—perhaps even infer the existence of oceans and continents.

Of course, gathering this type of information about an exoplanet is a big undertaking. Once gathered, though, such data could point scientists toward the best targets to investigate first. “This is just the first step in trying to understand the nature of the surfaces of extrasolar planets,” says A’Hearn.

The University of Maryland is the Principal Investigator institution, leading the overall EPOXI mission. NASA Goddard leads the extrasolar planet observations. NASA’s Jet Propulsion Laboratory, Pasadena, Calif., manages EPOXI for NASA’s Science Mission Directorate, Washington, D.C. The spacecraft was built for NASA by Ball Aerospace & Technologies Corp., Boulder, Colo.

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Galaxy Exposes Its Dusty Inner Workings in New Spitzer Image

infrared portrait of the Small Magellanic Cloud
The infrared portrait of the Small Magellanic Cloud, taken by NASA's Spitzer Space Telescope, reveals the stars and dust in this galaxy as never seen before.
› Full image and caption
NASA's Spitzer Space Telescope has captured an action-packed picture of the nearby Small Magellanic Cloud, a small galaxy that looks like a wispy cloud when seen from Earth.

From Spitzer's perch up in space, the galaxy's clouds of dust and stars come into clear view. The telescope's infrared vision reveals choppy piles of recycled stardust -- dust that is being soaked up by new star systems and blown out by old ones.

To some people, the new view might resemble a sea creature, or even a Rorschach inkblot test. But to astronomers, it offers a unique opportunity to study the whole life cycle of stars close-up. The image is available online at http://www.nasa.gov/AAS and http://www.jpl.nasa.gov/aas .

"It's quite the treasure trove," said Karl Gordon, the principal investigator of the latest Spitzer observations at the Space Telescope Science Institute in Baltimore, Md. "Because this galaxy is so close and relatively large, we can study all the various stages and facets of how stars form in one environment."

The Small Magellanic Cloud, and its larger sister galaxy, the Large Magellanic Cloud, are named after the seafaring explorer Ferdinand Magellan, who documented them while circling the globe nearly 500 years ago. From Earth's southern hemisphere, they can appear as wispy clouds. The Small Magellanic Cloud is the farther of the pair, at 200,000 light-years away.

Recent research has shown that the galaxies may not, as previously suspected, orbit around the Milky Way. Instead, they are thought to be merely sailing by, destined to go their own way. Astronomers say the two galaxies, which are both less evolved than a galaxy like ours, were triggered to create bursts of new stars by gravitational interactions with the Milky Way and with each other. In fact, the Large Magellanic Cloud may eventually consume its smaller companion.

Gordon and his team are interested in the Small Magellanic Cloud not only because it is so close and compact, but also because it is very similar to young galaxies thought to populate the universe billions of years ago. The Small Magellanic Cloud has only one-fifth the amount of heavier elements, such as carbon, contained in the Milky Way, which means that its stars haven't been around long enough to pump large amounts of these elements back into their environment. Such elements were necessary for life to form in our solar system.

Studies of the Small Magellanic Cloud therefore offer a glimpse into the different types of environments in which stars form.

The new Spitzer observations were presented today at the 215th meeting of the American Astronomical Society in Washington. They reveal the galaxy's youngest stars embedded in thick dust, in addition to the older stars, which spit the dust out. Taken together with visible-light observations, these Spitzer data help provide a census of the whole stellar population.

"With Spitzer, we are pinpointing how to best calculate the numbers of new stars that are forming right now," said Gordon. "Observations in the infrared give us a view into the birthplace of stars, unveiling the dust-enshrouded locations where stars have just formed."

Infrared light is color-coded in the new picture, so that blue shows older stars, green shows organic dust and red highlights dust-enshrouded star formation. Light encoded in blue has a wavelength of 3.6 microns; green is 8.0 microns; and red is 24 microns. This image was taken before Spitzer ran out of its liquid coolant in May 2009 and began its "warm" mission.

Other collaborators include: M. Meixner, M, Sewilo and B. Shiao of the Space Telescope Science Institute; M. Meade, B. Babler, S. Bracker of the University of Wisconsin at Madison; C. Engelbracht, M. Block, K. Misselt of the University of Arizona, Tucson; R. Indebetouw of the University of Virginia, Charlottesville; and J. Hora and T. Robitaille of the Harvard Smithsonian Center for Astrophysics, Cambridge, Mass.

The image includes Spitzer observations taken previously by a team led by Alberto Bolatto of the University of Maryland, College Park.

NASA's Jet Propulsion Laboratory, Pasadena, Calif., manages the Spitzer Space Telescope mission for NASA's Science Mission Directorate, Washington. Science operations are conducted at the Spitzer Science Center at the California Institute of Technology in Pasadena. Caltech manages JPL for NASA.

For more information about Spitzer, visit http://www.spitzer.caltech.edu/spitzer and http://www.nasa.gov/spitzer

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Centuries-Old Star Mystery Coming to a Close

Artist's concept of Epsilon Aurigae Astronomers using NASA's Spitzer Space telescope have found a likely solution to a centuries-old riddle of the night sky.
› Full image and caption

For almost two centuries, humans have looked up at a bright star called Epsilon Aurigae and watched with their own eyes as it seemed to disappear into the night sky, slowly fading before coming back to life again. Today, as another dimming of the system is underway, mysteries about the star persist. Though astronomers know that Epsilon Aurigae is eclipsed by a dark companion object every 27 years, the nature of both the star and object has remained unclear.

Now, new observations from NASA's Spitzer Space Telescope -- in combination with archived ultraviolet, visible and other infrared data -- point to one of two competing theories, and a likely solution to this age-old puzzle. One theory holds that the bright star is a massive supergiant, periodically eclipsed by two tight-knit stars inside a swirling, dusty disk. The second theory holds that the bright star is in fact a dying star with a lot less mass, periodically eclipsed by just a single star inside a disk. The Spitzer data strongly support the latter scenario.

"We've really shifted the balance of the two competing theories," said Donald Hoard of NASA's Spitzer Science Center at the California Institute of Technology in Pasadena. "Now we can get busy working out all the details." Hoard presented the results today at the 215th meeting of the American Astronomical Society in Washington.

Epsilon Aurigae can be seen at night from the northern hemisphere with the naked eye, even in some urban areas. Last August, it began its roughly two-year dimming, an event that happens like clockwork every 27.1 years and results in the star fading in brightness by one-half. Professional and amateur astronomers around the globe are watching, and the International Year of Astronomy 2009 marked the eclipse as a flagship "citizen science" event. More information is at http://www.citizensky.org .

Astronomers study these eclipsing binary events to learn more about the evolution of stars. Because one star passes in front of another, additional information can be gleaned about the nature of the stars. In the case of Epsilon Aurigae, what could have been a simple calculation has instead left astronomers endlessly scratching their heads. Certain aspects of the event, for example the duration of the eclipse, and the presence of "wiggles" in the brightness of the system during the eclipse, have not fit nicely into models. Theories have been put forth to explain what's going on, some quite elaborate, but none with a perfect fit.

The main stumper is the nature of the naked-eye star -- the one that dims and brightens. Its spectral features indicate that it's a monstrous star, called an F supergiant, with 20 times the mass, and up to 300 times the diameter, of our sun. But, in order for this theory to be true, astronomers had to come up with elaborate scenarios to make sense of the eclipse observations. They said that the eclipsing, companion star must actually be two so-called B stars surrounded by an orbiting disk of dusty debris. And some scenarios were even more exotic, calling for black holes and massive planets.

A competing theory proposed that the bright star was actually a less massive, dying star. But this model had holes too. There was no simple solution.

Hoard became interested in the problem from a technological standpoint. He wanted to see if Spitzer, whose delicate infrared arrays are too sensitive to observe the bright star directly, could be coaxed to observe it using a clever trick. "We pointed the star at the corner of four of Spitzer's pixels, instead of directly at one, to effectively reduce its sensitivity." What's more, the observation used exposures lasting only one-hundredth of a second -- the fastest that images can be obtained by Spitzer.

The resulting information, in combination with past Spitzer observations, represents the most complete infrared data set for the star to date. They confirm the presence of the companion star's disk, without a doubt, and establish the particle sizes as being relatively large like gravel rather than like fine dust.

But Hoard and his colleagues were most excited about nailing down the radius of the disk to approximately four times the distance between Earth and the sun. This enabled the team to create a multi-wavelength model that explained all the features of the system. If they assumed the F star was actually a much less massive, dying star, and they also assumed that the eclipsing object was a single B star embedded in the dusty disk, everything snapped together.

"It was amazing how everything fell into place so neatly," said Steve Howell of the National Optical Astronomy Observatory in Tucson, Ariz. "All the features of this system are interlinked, so if you tinker with one, you have to change another. It's been hard to get everything to fall together perfectly until now."

According to the astronomers, there are still many more details to figure out. The ongoing observations of the current eclipse should provide the final clues needed to put this mystery of the night sky to rest.

R.E. Stencel of the University of Denver, Colo., is also a collaborator on this research. NASA's Jet Propulsion Laboratory, Pasadena, Calif., manages the Spitzer Space Telescope mission for NASA's Science Mission Directorate, Washington. Science operations are conducted at the Spitzer Science Center at Caltech. Caltech manages JPL for NASA. For more information about Spitzer, visit http://www.spitzer.caltech.edu/spitzer and http://www.nasa.gov/spitzer .

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JPL Mourns Passing of Former Director Lew Allen Jr.

Before he became JPL Director, Allen had a long Air Force careerA former director of NASA's Jet Propulsion Laboratory, Lew Allen Jr., passed away Monday night, Jan. 4, at the age of 84, in Potomac Falls, Va. He led the laboratory from 1982 till 1990, during a period that included the launches of the Galileo mission to Jupiter, Magellan to Venus and the Infrared Astronomical Satellite, as well as Voyager 2's Uranus and Neptune flybys.

Allen was born Dec. 30, 1925, in Miami. He studied at the United States Military Academy at West Point, N.Y., and had a distinguished career in the U.S. Army and the Air Force, where he remained until 1982, achieving the rank of four-star general and serving as Chief of Staff of the Air Force.

In 1954, while still an Air Force officer assigned to the Los Alamos National Laboratory in New Mexico, Allen completed his doctorate in nuclear physics. He specialized in the potentially damaging effects of high-altitude nuclear explosions on the ground and on

spacecraft.

After leaving Los Alamos in 1961, Allen served in various scientific posts within the Office of the Secretary of Defense and the Office of the Secretary of the Air Force. Allen became director of the

National Security Agency in 1973. Allen was also a member of the National Academy of Engineering and the Council on Foreign Relations.

Burial is planned for Arlington National Cemetery, but funeral arrangements have not been made yet.

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NASA Awards Goddard Unified Enterprise Services and Technology Contract

NASA has selected ASRC Primus of Greenbelt, Md., for the Goddard Unified Enterprise Services and Technology (GUEST), Fixed Price-Incentive indefinite delivery-indefinite quantity contract. The five-year contract has a minimum value of $2 million and a maximum value of $229 million.

ASRC Primus will develop, integrate, sustain, and manage the information technology infrastructure and systems for NASA's Goddard Space Flight Center in Greenbelt, Md., in the areas of information systems management, business infrastructure and application development, system administration, and network design.

The contract encompasses all phases of information technology project implementation, design and development, integration, operations, maintenance, sustaining engineering, data administration, system administration and management.

For information about NASA's Goddard Space Flight Center, visit:

http://www.nasa.gov/goddard

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