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Landsat 8's First Year - On Feb. 11, 2013, the Landsat 8 satellite rocketed into a sunny California morning onboard a powerful Atlas V and began its life in orbit. In the year since launch, scientists have been working to understand the information the satellite has been sending back. Some have been calibrating the data—checking it against ground observations and matching it to the rest of the 42-year-long Landsat record. At the same time, the broader science community has been learning to use the new data. The map above—one of the first complete views of the United States from Landsat 8—is an example of how scientists are testing Landsat 8 data. The strips in the image above are a result of the way Landsat 8 operates. Like its predecessors, Landsat 8 collects data in 185-kilometer (115-mile) wide strips called swaths or paths. Each orbit follows a predetermined ground track so that the same path is imaged each time an orbit is repeated. It takes 233 paths and 16 days to cover all of the land on Earth. Image Credit: NASA/David Roy #earth #landsat #nasa #space #science #us #unitedtstates; -
With the help of a natural "zoom lens" in space, Hubble astronomers are looking farther than anyone has before. The first of a set of unprecedented, super-deep views of the universe contain images of some of the intrinsically faintest and youngest galaxies ever detected. This is just the first of several primary target fields in the program. The immense gravity in this foreground galaxy cluster, Abell 2744, warps space to brighten and magnify images of far-more-distant background galaxies as they looked over 12 billion years ago, not long after the big bang. The Hubble exposure reveals nearly 3,000 of these background galaxies interleaved with images of hundreds of foreground galaxies in the cluster. IMAGE CREDIT: NASA #nasa #science #hst #hubble #stars #galaxy #astronomy #astrophysics; -
Color-Coded Clues to Composition Superimposed on Martian Seasonal-Flow Image - This image combines a photograph of seasonal dark flows on a Martian slope with a grid of colors based on data collected by a mineral-mapping spectrometer observing the same area. The area is at Palikir Crater in the southern hemisphere of Mars. The photograph is from the High Resolution Imaging Science Experiment (HiRISE) camera. The composition information, as an image with pixels appearing as a grid of squares, is from the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM). Both of these instruments are on NASA's Mar Reconnaissance Orbiter. The view is oriented with north toward the bottom. The scale bar at lower left indicates 90 meters (295 feet). These dark, warm-season flows are called "recurring slope lineae" or RSL. Researchers are using observations from Mars orbiters to study the possibility that RSL result from action of salty liquid water. Image Credit: NASA/JPL-Caltech/UA/JHU-APL #mars #nasa #science #water #space #mro #hirise #geology #planets; -
An Array of Solar Arrays: Solar array panels on the Russian segment of the International Space Station and a blue and white part of Earth are photographed by an Expedition 38 crew member while the crew watches for the arrival of the ISS Progress 54 cargo spacecraft, loaded with 2.8 tons of food, fuel and supplies for the station crew. The new Progress, which docked to the station at 5:22 p.m. EST on Wednesday, Feb. 5, is loaded with 1,764 pounds of propellant, 110 pounds of oxygen, 926 pounds of water and 2,897 pounds of spare parts, experiment hardware and other supplies. Progress 54 is slated to spend about two months docked to the complex before departing to make way for ISS Progress 55. Image Credit: NASA #spacestation #iss #exp38 #station #space #nasa #astronaut #astropics #astropix #orbit #orbitingearth #lowearthorbit #leo #science; -
Until 2010, Indonesia’s Sinabung volcano was dormant, with no confirmed eruptions in the historical record. Fresh gas and ash plumes marked the arrival of a new series of eruptions. The Advanced Land Imager (ALI) on the Earth Observing-1 (EO-1) satellite collected this natural-color image of an ash plume from Sinabung on February 6, 2014. Frequent collapses from the unstable lava dome near Sinabung’s summit create pyroclastic flows that have swept at least 4.5 kilometers (2.8 miles) down the volcano’s slopes. The flow deposits are visible southeast of Sinabung’s summit and appear light gray. The eruption has coated much of the surrounding landscape with ash, causing green dark green forests to appear tan. Image credit: NASA/EO-1 ALI #volcano #indonesia #nasa #space #eo1 #earthpics #earthpix #earth #satellite;
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This view of the twilight sky and Martian horizon taken by NASA's Curiosity Mars rover includes Earth as the brightest point of light in the night sky. Earth is a little left of center in the image. Researchers used the left eye camera of Curiosity's Mast Camera (Mastcam) to capture this scene about 80 minutes after sunset on the 529th Martian day, or sol, of the rover's work on Mars (Jan. 31, 2014). The image has been processed to remove effects of cosmic rays. A human observer with normal vision, if standing on Mars, could easily see Earth and the moon as two distinct, bright "evening stars." The distance between Earth and Mars when Curiosity took the photo was about 99 million miles (160 million kilometers). Image Credit:NASA/JPL-Caltech/MSSS/TAMU #mars #earth #nasa #marscuriosity #rover #marsrover #curiosity #solarsystem #space #earthpix #earthfrommars; -
It's not often that the Winter Olympic Games come with an ocean view, but that's what we are getting this year at the Black Sea resort of Sochi, Russia. Sochi is the warmest city ever to host the winter games, which officially run from Feb. 7 through Feb. 23. This image of the Sochi Olympic venues was acquired on Jan. 4, 2014, by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) instrument on NASA's Terra spacecraft. This image centers on the Rosa Khutar ski resort in the mountains near Sochi. That's where the alpine Olympic events will be held. The resort is in the valley at center, and the ski runs are visible on the shadowed slopes on the left-hand side of the valley. The runs may be rated double black diamond, but they're not quite as steep as they appear in this image. Height is exaggerated 1.5 times to bring out topographic details. In this images, red indicates vegetation, white is snow, buildings appear in gray, and the ocean is dark blue. For all of NASA's Winter Olympics materials, visit http://www.nasa.gov/olympics Image Credit: NASA/GSFC/METI/ERSDAC/JAROS, & U.S./Japan ASTER Science Team #nasa #olympics #sochi2014 #sochi #olympic #aster #space #satellitepix #earthpix #earth; -
NASA's efforts on social media over the past year have been nominated for a "Shorty Award," which honor the best people and organizations on social media. These unique awards are for the social media community, by the social media community. Online nominating for the Shorty Awards is now open for social media users to nominate users for excellence over the past year. We're excited to have Astronaut Mike Hopkins #Selfie from Space nominated for #Selfie of the Year. Help nominate us today at http://go.nasa.gov/SelfieShorty Learn more about NASA & the Shorty Awards at: http://www.nasa.gov/connect/2014_ShortyAwards.html #ShortyAwards #Selfie #Shorty #Awards #SocialMedia #NASA #Space #Photo; -
It's not often that the Winter Olympic Games come with an ocean view, but that's what we are getting this year at the Black Sea resort of Sochi, Russia. Sochi is the warmest city ever to host the winter games, which officially run from Feb. 7 through Feb. 23. This image of the Sochi Olympic venues was acquired on Jan. 4, 2014, by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) instrument on NASA's Terra spacecraft. The Olympic Park Coastal Cluster for indoor sports appears as a circular area on the shoreline in the bottom center of the image. There's a separate arena for curling, alongside multiple arenas for hockey and skating. The actual city of Sochi, which has a population of about 400,000, is not visible in the picture. In this images, red indicates vegetation, white is snow, buildings appear in gray, and the ocean is dark blue. For all of NASA's Winter Olympics materials, visit http://www.nasa.gov/olympics Image Credit: NASA/GSFC/METI/ERSDAC/JAROS, & U.S./Japan ASTER Science Team #nasa #olympics #sochi2014 #sochi #olympic #aster #space #satellitepix #earthpix #earth; -
Orion Stage Adapter Aces Structural Loads Testing: A test article of the stage adapter that will connect the Orion spacecraft to a United Launch Alliance (ULA) Delta IV rocket for its first mission, Exploration Flight Test-1, aced structural loads testing Jan. 30. Now, the stage adapter that will fly on the Delta IV is officially ready for the journey to its final exam -- a flight more than 15 times farther into deep space than the International Space Station. For the structural loads test, the hardware was attached with lines running in different directions on the hardware. Hydraulic pressure was added to those lines in increments, which pushed on the adapter to evaluate its integrity. The test was similar to the recent "can-crush" tests on a rocket fuel tank, but the adapter wasn't purposefully buckled for the structural test as it was on the fuel tank. Twenty-five test cases were completed on the adapter. Image credit: NASA/MSFC/David Olive #nasa #orion #eft1 #exploration #flighttest #rockets #deltaiv #launch #space;
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Just weeks after NASA’s Chandra X-ray Observatory began operations in 1999, the telescope pointed at Centaurus A. This galaxy, at a distance of about 12 million light years from Earth, contains a gargantuan jet blasting away from a central supermassive black hole. Since then, Chandra has returned its attention to this galaxy, each time gathering more data. And, like an old family photo that has been digitally restored, new processing techniques are providing astronomers with a new look at this old galactic friend. As in all of Chandra’s images of Cen A, this one shows the spectacular jet of outflowing material – seen pointing from the middle to the upper left – that is generated by the giant black hole at the galaxy’s center. This new high-energy snapshot of Cen A also highlights a dust lane that wraps around the waist of the galaxy. Astronomers think this feature is a remnant of a collision that Cen A experienced with a smaller galaxy millions of years ago. Image credit: X-ray: NASA/CXC/U. Birmingham/M. Burke et al. #nasa #chandra #blackhole #earth @galaxy #science #space #astronomy; -
Crescent Moon Rising and Earth's Atmosphere - On Feb. 1, 2014, Japan Aerospace Exploration Agency astronaut Koichi Wakata tweeted this view of a crescent moon rising and the cusp of Earth's atmosphere. Distinct colors are visible because the dominant gases and particles in each layer of the atmosphere act as prisms, filtering out certain colors of light. Image Credit: NASA #nasa #space #iss #exp38 #moon #earth #jaxa #atmosphere #photography; -
A Spectacular New Martian Impact Crater - A dramatic, fresh impact crater dominates this image taken by the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter on Nov. 19, 2013. Researchers used HiRISE to examine this site because the orbiter's Context Camera had revealed a change in appearance here between observations in July 2010 and May 2012, bracketing the formation of the crater between those observations. The crater spans approximately 100 feet (30 meters) in diameter and is surrounded by a large, rayed blast zone. Because the terrain where the crater formed is dusty, the fresh crater appears blue in the enhanced color of the image, due to removal of the reddish dust in that area. Debris tossed outward during the formation of the crater is called ejecta. In examining ejecta's distribution, scientists can learn more about the impact event. The explosion that excavated this crater threw ejecta as far as 9.3 miles (15 kilometers). Image credit: NASA/JPL-Caltech/Univ. of Arizona #nasa #space #mars #crater #science #planets; -
Today in 1974, NASA's Mariner 10 mission took this first close-up photo of Venus. Made using an ultraviolet filter in its imaging system, the photo has been color-enhanced to bring out Venus's cloudy atmosphere as the human eye would see it. Venus is perpetually blanketed by a thick veil of clouds high in carbon dioxide and its surface temperature approaches 900 degrees Fahrenheit. Launched on Nov. 3, 1973 atop an Atlas-Centaur rocket, Mariner 10 flew by Venus in 1974. #nasa #space #science #venus #atlas; -
Now It's Your Turn... NASA Unfiltered - Our First Photo #NASASocial: Are you instantly on Instagram? A Flickr fanatic? If you know the difference between shutter speed and an f-stop, this #NASASocial is for you. @NASAGoddard is hosting an event for its photo-fanatic social media followers on the morning of Feb. 27, 2014, at NASA's Goddard Space Flight Center in Greenbelt, Md. This NASA Social will bring 15 social media photo-gurus together at NASA Goddard to snap and share photos of where NASA's next great Earth science satellite was developed, built and tested. The Global Precipitation Measurement (GPM) mission Core Observatory is the largest satellite ever built and tested at NASA Goddard. Info and registration: http://www.nasa.gov/social Credit: NASA #nasagoddard #nasasocial #nasa #gpm #photo #inperson #irl #space #visitnasa;
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