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We are currently reviewing possible repair spacewalks aboard the International Space Station. NASA engineers continued efforts Sunday to regulate temperatures in one of two cooling loops on the space station affected by the malfunction last week of a flow control valve in a cooling pump on the station’s starboard truss. A Flow Control Valve in the starboard Pump Module that enables the flow of ammonia to cool station systems stopped positioning itself properly last Wednesday, resulting in a drop of temperature in Cooling Loop A. That necessitated the shutdown of some support systems on the station. The temperature must be warm enough in the cooling lines to allow the system’s heat exchangers to dissipate excess heat from the station through the external radiators on the complex. The primary heat rejection capability for station systems shifted last week to Cooling Loop B that uses a fully operational Pump Module on the port truss. Meanwhile, aboard the space station, astronauts Rick Mastracchio and Mike Hopkins continued to prepare their spacesuits and other equipment in the Quest airlock Sunday should they be called upon to conduct spacewalks to replace the Pump Module. In this image, Flight Engineer Doug Wheelock worked outside the International Space Station in August 2010 to install a spare pump module. CREDIT: NASA #nasa #space #iss #spacewalk #cygnus #orb1 #antares #exploration #repair #eva #exp38 #astronauts; -
Crab Nebula - This image shows a composite view of the Crab nebula, an iconic supernova remnant in our Milky Way galaxy, as viewed by the Herschel Space Observatory and the Hubble Space Telescope. Herschel is a European Space Agency (ESA) mission with important NASA contributions, and Hubble is a NASA mission with important ESA contributions. The image combines Hubble's view of the nebula at visible wavelengths, obtained using three different filters sensitive to the emission from oxygen and sulphur ions and is shown here in blue. Herschel's far-infrared image reveals the emission from dust in the nebula and is shown here in red. While studying the dust content of the Crab nebula with Herschel, a team of astronomers have detected emission lines from argon hydride, a molecular ion containing the noble gas argon. This is the first detection of a noble-gas based compound in space. Image credit: ESA/Herschel/PACS/MESS Key Programme Supernova Remnant Team; NASA, ESA and Allison Loll/Jeff Hester (Arizona State University) #nasa #space #hubble #galaxy #nebula #milkyway #herschel #astronomy #esa #science; -
The annual Geminid meteor shower will peak on the night of Dec. 13-14, 2013. This is a composite, false-color image that combines meteor fall from various meteor showers (Orionids, Perseids, Geminids) from 2009-2011. All images are based on grey-scale images provided by the Meteoroid Environment Office at NASA's Marshall Space Flight Center in Huntsville, Ala. The Geminid meteor shower is the most intense meteor shower of the year. It lasts for several days (Dec. 12-16), is rich in fireballs and can be seen from almost any point on Earth. The 2013 peak rate is between 100-120 meteors per hour. The waxing gibbous moon will reduce the rate by half, except for the brief time between moonset (4 a.m. local time) and sunrise. CREDIT: NASA #nasa #space #meteor #sky #geminid #fireball #earth #science; -
#AGU13 - What is the impact of Earth's seven plus billion people on biodiversity? It's a complex puzzle, as biodiversity continuously shapes the planet's land and oceans. Allison Leidner of NASA Headquarters demonstrated how space based observations reveal Earth as a system, presenting at NASA's Hyperwall this week at the fall meeting of the American Geophysical Union (AGU) in San Francisco. In addition to coordinating activities in NASA's biodiversity program, Leidner helps coordinate NASA's involvement in the National Climate Assessment. "I'm here at AGU for both of those reasons, because AGU is a really important conference for understanding the latest advances in climate change science, and also understanding the impacts and how we assess those changes to help inform our decisions," Leidner said. The annual fall meeting of the AGU is a chance for more than 22,000 scientists, educators, and students to present their research, broaden their knowledge base and embrace the excitement of science. In these 15-second videos, scientists talk about the NASA science projects they are presented at the conference that you may not have seen. #nasa #biodiversity #earth #agu #video #science #weather #climate #hyperwall #oceans; -
#AGU13 -This is not Yellowstone National Park, or anywhere on Earth for that matter – these plumes erupt from the frigid, icy surface of the Jovian moon Europa. Observations from NASA’s Hubble Space Telescope provide the first strong evidence of water vapor plumes ejected off the moon's surface. Michelle Thaller of NASA's Goddard Space Flight Center in Greenbelt, Md., described the study, and other new findings from planetary science, to a sizeable crowd gathered around NASA's Hyperwall at the fall meeting of the American Geophysical Union (AGU) in San Francisco. Lorenz Roth of Southwest Research Institute in San Antonio lead the plume research, which was published Dec. 12 in the online issue of Science Express and presented at an AGU media briefing. The annual fall meeting of the AGU is a chance for more than 22,000 scientists, educators, and students to present their research, broaden their knowledge base and embrace the excitement of science. In these 15-second videos, scientists talk about the NASA science projects they are presented at the conference that you may not have seen. #nasa #moon #earth #agu #video #science #jupiter #climate #europa #jovian #hubble #hyperwall #planets #solarsystem;
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#AGU13 - Scientist flew hot on the heels of the NASA's DC-8 aircraft earlier this year, with instruments to sniff out how aircraft emissions from petroleum fuels differ from those of biofuels. What is the impact of near-ground emissions on pollution, or higher-altitude emissions on climate? Richard Moore, a post-doctoral fellow at NASA's Langley Research Center in Hampton, Va., described early results of the Alternative Fuel Effects on Contrails and Cruise Emissions (ACCESS) experiment, in a poster presented this week at the fall meeting of the American Geophysical Union in San Francisco. The annual fall meeting of the AGU is a chance for more than 22,000 scientists, educators, and students to present their research, broaden their knowledge base and embrace the excitement of science. In these 15-second videos, scientists talk about the NASA science projects they are presented at the conference that you may not have seen. #nasa #aircraft #earth #agu #video #science #weather #climate #biofuels #pollution #emissions; -
#AGU13 - Deep in the swamplands of southern Louisiana, a sinkhole gobbled up an entire 25 acres over the span of about one year and caused the evacuation of a nearby town. While disasters like this might come as a shock to the alligators in the marsh, events like this are becoming possible to forecast, according to Cathleen Jones of NASA's Jet Propulsion Laboratory in Pasadena, Calif. Jones uses data from radar instruments on NASA aircraft, flown repeatedly over a site, to detect change in land surfaces. She was surprised to find that the technique can even detect some sinkholes before they collapse, and described the specifics of her findings this week at the fall meeting of the American Geophysical Union (AGU) in San Francisco. The annual fall meeting of the AGU is a chance for more than 22,000 scientists, educators, and students to present their research, broaden their knowledge base and embrace the excitement of science. In these 15-second videos, scientists talk about the NASA science projects they are presented at the conference that you may not have seen. #nasa #aircraft #earth #agu #video #science #weather #climate #sinkhole; -
#AGU13 - Record drought plagues farmers in the Coquimbo region of Chile. Research by Joshua Kelly of NASA's Langley Research Center in Hampton, Va., and his colleagues show how satellite observations could help ease the strain on already limited water resources in the arid region. Two instruments on NASA's Terra satellite provide a better view of how much water farmers and resource managers can expect as snow melts off the surrounding Andes Mountains and flows down the region’s rivers. Kelly explained the potential in an informal talk this week at the fall meeting of the American Geophysical Union (AGU) in San Francisco. With improved forecasts of water availability, water managers could make decisions to lessen the effects of the drought, which otherwise could devastate the region’s agriculture and economy. The annual fall meeting of the AGU is a chance for more than 22,000 scientists, educators, and students to present their research, broaden their knowledge base and embrace the excitement of science. In these 15-second videos, scientists talk about the NASA science projects they are presented at the conference that you may not have seen. #nasa #space #earth #agu #video #science #snow #weather #climate #satellite #nasaterra; -
#AGU13 video - The Antarctic Peninsula is one of the fastest warming parts of the planet. There, ice shelves jut out from glaciers and into the sea, but the situation can change rapidly. In 1995 and 2002, for example, giant sections of the Larsen Ice Shelf disintegrated. When these remnants of glaciers and ice sheets float off and begin to melt, it can have implications for sea level rise. So Ted Scambos, lead scientist at the National Snow and Ice Data Center in Boulder, Colo., and other scientists keep close watch on the region, using ground-based instruments and satellites. This week at the fall meeting of the American Geophysical Union in San Francisco, Scambos presented a new look at the changes that occur before an ice shelf breaks apart. The research provides insight on the earliest instigators of ice shelf change. The annual fall meeting of the AGU is a chance for more than 22,000 scientists, educators, and students to present their research, broaden their knowledge base and embrace the excitement of science. In these 15-second videos, scientists talk about the NASA science projects they are presented at the conference that you may not have seen. #nasa #space #earth #agu #video #science #ice #weather @climate #antarctic; -
CATS in space? That will soon be the case – but no need for concern about allergic astronauts or litter boxes in zero gravity. This summer, the Cloud-Aerosol Transport System (CATS) instrument is slated to be among the first NASA instruments to use the International Space Station as a platform to send back Earth observations in near real time, all of the time. Once in space, CATS will use a laser to obtain information about the climate impacts of clouds and aerosols on a global scale. Matthew McGill, of NASA's Goddard Space Flight Center in Greenbelt, Md., is principal investigator of CATS and spoke about the instrument this week at the fall meeting of the American Geophysical Union (AGU) in San Francisco. The annual fall meeting of the AGU is a chance for more than 22,000 scientists, educators, and students to present their research, broaden their knowledge base and embrace the excitement of science. In these 15-second videos, scientists talk about the NASA science projects they are presented at the conference that you may not have seen. #nasa #space #earth #agu #agu13 #video #science;
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Astronaut Rick Mastracchio (@AstroRM) tweeted this image on Dec. 12 from the #ISS and wrote, “Volcano in Central America. The white lines that look like clouds are airplane contrails.” Rick is taking photos from the orbiting outpost some 240 miles up circling the Earth every 90 minutes. The International Space Station (ISS) continues the NASA tradition of Earth observation from human-tended spacecraft. Operational since November 2000, the ISS is well suited for documenting Earth features and provides an excellent stage for observing most populated areas of the world. Images coming down from the International Space Station are processed on a daily basis and include over 1.2 million images through Nov. 1, 2013. Image credit: NASA #nasa #space #iss #astronauts #astropix #spacestation #earth #australia #terrain; -
Lakes on Titan! This colorized mosaic from NASA's Cassini mission shows the most complete view yet of Titan's northern land of lakes and seas. Saturn's moon Titan is the only world in our solar system other than Earth that has stable liquid on its surface. The liquid in Titan's lakes and seas is mostly methane and ethane. The data were obtained by Cassini's radar instrument from 2004 to 2013. In this projection, the north pole is at the center. The view extends down to 50 degrees north latitude. In this color scheme, liquids appear blue and black depending on the way the radar bounced off the surface. Land areas appear yellow to white. A haze was added to simulate the Titan atmosphere. The area above and to the left of the north pole is dotted with smaller lakes. Lakes in this area are about 30 miles (50 kilometers) across or less. For more information about the Cassini-Huygens mission visit http://saturn.jpl.nasa.gov and http://www.nasa.gov/cassini. Image Credit: NASA/JPL-Caltech/ASI/USGS #nasa #space #moons #saturn #titan #science #discovery #mosaic #lakes #seas #planets #solarsystem; -
Water Vapor Venting off Jovian Moon - NASA's Hubble Space Telescope has observed water vapor above the frigid south polar region of Jupiter's moon Europa, providing the first strong evidence of water plumes erupting off the moon's surface. Previous scientific findings from other sources already point to the existence of an ocean located under Europa's icy crust. Researchers are not yet certain whether the detected water vapor is generated by water plumes erupting on the surface, but they are confident this is the most likely explanation. Should further observations support the finding, it would make Europa the second moon in the solar system known to have water vapor plumes. The findings were published in the Thursday, Dec. 12, online issue of Science Express, and reported at the meeting of the American Geophysical Union in San Francisco. This is an artist's concept of a plume of water vapor thought to be ejected off the frigid, icy surface of the Jovian moon Europa, located about 500 million miles (800 million kilometers) from the sun. Image Credit: NASA/ESA/K. Retherford/SWRI For more information, visit: http://go.nasa.gov/1d9E9L4 #nasa #space #europa #jovian #jupiter #moon #hubble #hst #agu13 #water #ice #icycrust #solarsystem #planets; -
NASA's Orion Spacecraft Heads Cross Country - A test version of NASA’s Orion spacecraft gears up to take a long road trip. Starting from NASA’s Langley Research Center in Hampton, Va., the mockup will take a four-week journey across the nation to Naval Base San Diego in California. There, the test article will be used to support NASA’s Underway Recovery Test in February 2014. The test will simulate the recovery of Orion during its first mission, Exploration Flight Test – 1 (EFT-1), scheduled for September 2014. The uncrewed EFT-1 mission will take Orion to an altitude of approximately 3,600 miles above the Earth’s surface, reentering the atmosphere at a speed of over 20,000 miles per hour before landing in the Pacific Ocean. The Orion mockup will travel through Virginia, Tennessee, Arkansas, Texas, New Mexico, Arizona and then reach its final destination in California. If spotted, share your pictures using the hashtag #SpotOrion Image Credit: NASA/David C. Bowman #nasa #space #iss #orion #astronauts #earth #recoverytest; -
Clay Prints on Europa - This image, using data from NASA's Galileo mission, shows the first detection of clay-like minerals on the surface of Jupiter's moon Europa. The clay-like minerals appear in blue in the false-color patch of data from Galileo's Near-Infrared Mapping Spectrometer. Surfaces richer in water ice appear in red. The background image is a mosaic of images from Galileo's Solid State Imaging system in the colors that human eyes would see. Scientists think an asteroid or comet impact could have delivered the clay-type minerals to Europa because these minerals are commonly found in these primitive celestial bodies. These kinds of asteroids and comets also typically carry organic compounds. Many scientists believe Europa is the best location in our solar system to find existing life. It has a subsurface ocean in contact with rock, an icy surface that mixes with the ocean below, salts on the surface that create an energy gradient, and a source of heat (the flexing that occurs as it gets stretched and squeezed by Jupiter's gravity). Those conditions were likely in place shortly after Europa first coalesced in our solar system. For more information on Europa, visit: http://go.nasa.gov/18Dun4C Image credit: NASA/JPL-Caltech/SETI #nasa #space #planets #europa #galileo #water #mapping #minerals #solarsystem #rock #salt # icy #jupiter #science #ice #clay #asteroid #comet;
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