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Tenzing Montes and Hillary Montes are mountain ranges honoring Tenzing Norgay (1914-1986) and Sir Edmund Hillary (1919-2008), the Indian/Nepali Sherpa and New Zealand mountaineer were the first to reach the summit of Mount Everest and return safely.      Al-Idrisi Montes honors Ash-Sharif al-Idrisi (1100-1165/66), a noted Arab mapmaker and geographer whose landmark work of medieval geography is sometimes translated as \"The Pleasure of Him Who Longs to Cross the Horizons.”      Djanggawul Fossae defines a network of long, narrow depressions named for the Djanggawuls, three ancestral beings in indigenous Australian mythology who traveled between the island of the dead and Australia, creating the landscape and filling it with vegetation.      Sleipnir Fossa is named for the powerful, eight-legged horse of Norse mythology that carried the god Odin into the underworld.      Virgil Fossae honors Virgil, one of the greatest Roman poets and Dante's fictional guide through hell and purgatory in the Divine Comedy.      Adlivun Cavus is a deep depression named for Adlivun, the underworld in Inuit mythology.      Hayabusa Terra is a large land mass saluting the Japanese spacecraft and mission (2003-2010) that performed the first asteroid sample return.      Voyager Terra honors the pair of NASA spacecraft, launched in 1977, that performed the first \"grand tour\" of all four giant planets. The Voyager spacecraft are now probing the boundary between the Sun and interstellar space.      Tartarus Dorsa is a ridge named for Tartarus, the deepest, darkest pit of the underworld in Greek mythology.      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This map was produced by the USGS Astrogeology Science Center for the International Astronomical Union (IAU) Working Group for Planetary System Nomenclature.  http://photojournal.jpl.nasa.gov/catalog/PIA20713","description_508":"This map of Titan from NASA's Cassini imaging coverage, shows the names of many but not all features on the Saturnian moon that have been approved by the International Astronomical Union.","keywords":["Titan","Cassini-Huygens"],"media_type":"image","nasa_id":"PIA20713","secondary_creator":"NASA/JPL-Caltech/Space Science Institute/USGS","title":"Map of Titan with Labeled Features"}],"links":[{"href":"https://images-assets.nasa.gov/image/PIA20713/PIA20713~medium.jpg","rel":"alternate","render":"image","width":1280,"size":122000,"height":665},{"href":"https://images-assets.nasa.gov/image/PIA20713/PIA20713~small.jpg","rel":"alternate","render":"image","width":640,"size":36000,"height":332},{"href":"https://images-assets.nasa.gov/image/PIA20713/PIA20713~thumb.jpg","rel":"preview","render":"image","width":640,"size":36000,"height":332},{"href":"https://images-assets.nasa.gov/image/PIA20713/PIA20713~large.jpg","rel":"alternate","render":"image","width":1920,"size":241000,"height":997},{"href":"https://images-assets.nasa.gov/image/PIA20713/PIA20713~orig.jpg","rel":"canonical","render":"image","height":4442,"width":8546,"size":3000000}]},{"href":"https://images-assets.nasa.gov/video/jsc2020m000244_Spacesuits for the Next Explorers_Full Feature_1080_MP4/collection.json","data":[{"center":"JSC","date_created":"2020-10-20T00:00:00Z","description":"Get a behind the scenes look at the creation of NASA’s new spacesuit, the xEMU (Exploration Get a behind the scenes look at the creation of NASA’s new spacesuit, the xEMU (Exploration Extravehicular Mobility Unit).  In this full feature, you’ll discover how the spacesuit is being built for NASA’s new missions beyond low-Earth orbit, looking forward to astronauts walking on the Moon and Mars and exploring in person.  Testing for the suit takes place in the desert, underwater, and in unique NASA laboratories that can simulate the gravity of the Moon, Mars, or no gravity at all.  The end result will be a spacesuit that has more flexibility, more power and more capability to allow astronauts to explore like never before.  www.nasa.gov/suitup","media_type":"video","nasa_id":"jsc2020m000244_Spacesuits for the Next Explorers_Full Feature_1080_MP4","title":"Spacesuits for the Next Explorers (Full Feature)"}],"links":[{"href":"https://images-assets.nasa.gov/video/jsc2020m000244_Spacesuits for the Next Explorers_Full Feature_1080_MP4/jsc2020m000244_Spacesuits for the Next Explorers_Full Feature_1080_MP4~large.jpg","rel":"alternate","render":"image","width":800,"size":57000,"height":450},{"href":"https://images-assets.nasa.gov/video/jsc2020m000244_Spacesuits for the Next Explorers_Full Feature_1080_MP4/jsc2020m000244_Spacesuits for the Next Explorers_Full Feature_1080_MP4~medium.jpg","rel":"alternate","render":"image","width":400,"size":24000,"height":225},{"href":"https://images-assets.nasa.gov/video/jsc2020m000244_Spacesuits for the Next Explorers_Full Feature_1080_MP4/jsc2020m000244_Spacesuits for the Next Explorers_Full Feature_1080_MP4~small.jpg","rel":"alternate","render":"image","width":200,"size":8300,"height":112},{"href":"https://images-assets.nasa.gov/video/jsc2020m000244_Spacesuits for the Next Explorers_Full Feature_1080_MP4/jsc2020m000244_Spacesuits for the Next Explorers_Full Feature_1080_MP4~thumb.jpg","rel":"preview","render":"image","width":300,"size":15000,"height":168},{"href":"https://images-assets.nasa.gov/video/jsc2020m000244_Spacesuits for the Next Explorers_Full Feature_1080_MP4/jsc2020m000244_Spacesuits for the Next Explorers_Full Feature_1080_MP4.srt","rel":"captions"}]},{"href":"https://images-assets.nasa.gov/image/PIA20918/collection.json","data":[{"center":"JPL","date_created":"2016-09-26T23:20:58Z","description":"This topographical map of Ceres, made with images from NASA's Dawn spacecraft, shows all of the dwarf planet's named features as of September 2016. Dawn celebrated nine years since launch on September 27, 2016.  To date, more than 110 places on Ceres have been named. These include craters such as Occator Crater, home of the brightest areas on the dwarf planet, as well as crater chains called catenae, mountains such as Ahuna Mons, and other geological features  Among the most recently named features is Kwanzaa Tholus, named after the African-American winter holiday Kwanzaa, which is based on ancient African harvest festivals. A tholus is a small dome-shaped mountain or hill. There are a total of seven tholi named on Ceres.  The latest list of features on Ceres can be found at the USGS Planetary Nomenclature website.  http://photojournal.jpl.nasa.gov/catalog/PIA20918","description_508":"This topographical map of Ceres, made with images from NASA's Dawn spacecraft, shows all of the dwarf planet named features as of September 2016. Dawn celebrated nine years since launch on September 27, 2016.","keywords":["Dawn"],"media_type":"image","nasa_id":"PIA20918","secondary_creator":"NASA/JPL-Caltech/UCLA/MPS/DLR/IDA","title":"Ceres Feature Names: September 2016"}],"links":[{"href":"https://images-assets.nasa.gov/image/PIA20918/PIA20918~small.jpg","rel":"alternate","render":"image","width":640,"size":70000,"height":359},{"href":"https://images-assets.nasa.gov/image/PIA20918/PIA20918~thumb.jpg","rel":"preview","render":"image","width":640,"size":70000,"height":359},{"href":"https://images-assets.nasa.gov/image/PIA20918/PIA20918~orig.jpg","rel":"canonical","render":"image","height":1076,"width":1914,"size":516000}]},{"href":"https://images-assets.nasa.gov/image/PIA00201/collection.json","data":[{"center":"JPL","date_created":"1996-03-08T03:25:53Z","description":"This image from the Atla region of Venus obtained by NASA Magellan spacecraft shows several types of volcanic features and superimposed surface fractures.  http://photojournal.jpl.nasa.gov/catalog/PIA00201","description_508":"This image from the Atla region of Venus obtained by NASA Magellan spacecraft shows several types of volcanic features and superimposed surface fractures. 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NASA Spacesuit User Interface Technologies for Students (SUITS) challenges students to develop cutting edge display and control solutions within augmented reality environments for use on the lunar surface. SUITS is one way the Artemis generation is contributing to space exploration.  Check out stem.nasa.gov/artemis to learn more about the Artemis Student Challenges.  jsc2021m000206","media_type":"video","nasa_id":"jsc2021m000206_SUITS Spacesuit User Interface Technologies for Students Feature _HQREV_MP4","title":"S.U.I.T.S. 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A small impact crater near the tip of the heart is responsible for the formation of the bright, heart-shaped feature","description_508":"This wide-view picture of a heart-shaped feature in Arabia Terra on Mars was taken on May 23, 2010, by NASA Mars Reconnaissance Orbiter. A small impact crater near the tip of the heart is responsible for the formation of the bright, heart-shaped feature","keywords":["Mars","Mars Reconnaissance Orbiter MRO"],"media_type":"image","nasa_id":"PIA13799","secondary_creator":"NASA/JPL-Caltech/MSSS","title":"Heart-Shaped Feature in Arabia Terra Wide View"}],"links":[{"href":"https://images-assets.nasa.gov/image/PIA13799/PIA13799~thumb.jpg","rel":"preview","render":"image","width":420,"size":26000,"height":487},{"href":"https://images-assets.nasa.gov/image/PIA13799/PIA13799~orig.jpg","rel":"canonical","render":"image","height":487,"width":420,"size":31000}]},{"href":"https://images-assets.nasa.gov/image/PIA08713/collection.json","data":[{"center":"JPL","date_created":"2006-08-30T18:50:38Z","description":"Shadows Draw Attention to Features of Mars Landscape Sand Ripples","description_508":"Shadows Draw Attention to Features of Mars Landscape Sand Ripples","keywords":["Mars","Mars Exploration Rover MER"],"media_type":"image","nasa_id":"PIA08713","secondary_creator":"NASA/JPL-Caltech/Cornell","title":"Shadows Draw Attention to Features of Mars Landscape Sand Ripples"}],"links":[{"href":"https://images-assets.nasa.gov/image/PIA08713/PIA08713~thumb.jpg","rel":"preview","render":"image","width":1059,"size":70000,"height":408},{"href":"https://images-assets.nasa.gov/image/PIA08713/PIA08713~orig.jpg","rel":"canonical","render":"image","height":408,"width":1059,"size":73000}]},{"href":"https://images-assets.nasa.gov/image/PIA01031/collection.json","data":[{"center":"JPL","date_created":"2000-06-22T16:00:55Z","description":"Evidence for Recent Liquid Water on Mars: Basic Features of Martian Gullies","description_508":"Evidence for Recent Liquid Water on Mars: Basic Features of Martian Gullies","keywords":["Mars","Mars Global Surveyor MGS"],"media_type":"image","nasa_id":"PIA01031","secondary_creator":"NASA/JPL/MSSS","title":"Evidence for Recent Liquid Water on Mars: Basic Features of Martian Gullies"}],"links":[{"href":"https://images-assets.nasa.gov/image/PIA01031/PIA01031~small.jpg","rel":"alternate","render":"image","width":640,"size":71000,"height":479},{"href":"https://images-assets.nasa.gov/image/PIA01031/PIA01031~thumb.jpg","rel":"preview","render":"image","width":640,"size":71000,"height":479},{"href":"https://images-assets.nasa.gov/image/PIA01031/PIA01031~orig.tif","rel":"canonical","render":"image","height":668,"width":892,"size":138000}]},{"href":"https://images-assets.nasa.gov/image/PIA08712/collection.json","data":[{"center":"JPL","date_created":"2006-08-30T18:48:15Z","description":"Shadows Draw Attention to Features of Mars Landscape Rover Tracks","description_508":"Shadows Draw Attention to Features of Mars Landscape Rover Tracks","keywords":["Mars","Mars Exploration Rover MER"],"media_type":"image","nasa_id":"PIA08712","secondary_creator":"NASA/JPL-Caltech/Cornell","title":"Shadows Draw Attention to Features of Mars Landscape Rover Tracks"}],"links":[{"href":"https://images-assets.nasa.gov/image/PIA08712/PIA08712~small.jpg","rel":"alternate","render":"image","width":640,"size":35000,"height":383},{"href":"https://images-assets.nasa.gov/image/PIA08712/PIA08712~thumb.jpg","rel":"preview","render":"image","width":640,"size":35000,"height":383},{"href":"https://images-assets.nasa.gov/image/PIA08712/PIA08712~orig.jpg","rel":"canonical","render":"image","height":763,"width":1273,"size":116000}]},{"href":"https://images-assets.nasa.gov/image/PIA12003/collection.json","data":[{"center":"JPL","date_created":"2009-05-06T00:16:30Z","description":"In this image from the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter, the dark branched features in the floor of Antoniadi Crater look like giant ferns, or fern casts. However, these ferns would be several miles in size and are composed of rough rocky materials.  A more likely hypothesis is that this represents a channel network that now stands in inverted relief. The channels may have been lined or filled by indurated materials, making the channel fill more resistant to erosion by the wind than surrounding materials. After probably billions of years of wind erosion the resistant channels are now relatively high-standing. The material between the branched ridges has a fracture pattern and color similar to deposits elsewhere on Mars that are known to be rich in hydrated minerals such as clays.  The inverted channels have short, stubby branches characteristic of formation by groundwater sapping. Spring water seeps into the channels and undercuts overlying layers, which collapse, so the channels grow headward. These images tell the story of an ancient wet environment on Mars, where life could have been possible. Ancient Martian life, if it existed, would most likely consist of microorganisms rather than giant tree ferns.  This image, covering an area about 1 kilometer (0.6 mile) across, is a portion of the HiRISE observation catalogued as ESP_012435_2015, taken on March 22, 2009. The observation is centered at 21.4 degrees north latitude, 61.3 degrees east longitude. The image was taken at a local Mars time of 3:31 p.m. and the scene is illuminated from the west with a solar incidence angle of 66 degrees, thus the sun was about 24 degrees above the horizon. At a solar longitude of 232.1 degrees, the season on Mars is northern autumn.  http://photojournal.jpl.nasa.gov/catalog/PIA12003","description_508":"Branched Features on the Floor of Antoniadni Crater","keywords":["Mars","Mars Reconnaissance Orbiter MRO","HiRISE"],"media_type":"image","nasa_id":"PIA12003","secondary_creator":"NASA/JPL-Caltech/University of Arizona","title":"Branched Features on the Floor of Antoniadni Crater"}],"links":[{"href":"https://images-assets.nasa.gov/image/PIA12003/PIA12003~medium.jpg","rel":"alternate","render":"image","width":1280,"size":308000,"height":960},{"href":"https://images-assets.nasa.gov/image/PIA12003/PIA12003~small.jpg","rel":"alternate","render":"image","width":640,"size":75000,"height":480},{"href":"https://images-assets.nasa.gov/image/PIA12003/PIA12003~thumb.jpg","rel":"preview","render":"image","width":640,"size":75000,"height":480},{"href":"https://images-assets.nasa.gov/image/PIA12003/PIA12003~large.jpg","rel":"alternate","render":"image","width":1920,"size":705000,"height":1440},{"href":"https://images-assets.nasa.gov/image/PIA12003/PIA12003~orig.jpg","rel":"canonical","render":"image","height":1920,"width":2560,"size":1353000}]},{"href":"https://images-assets.nasa.gov/image/GSFC_20171208_Archive_e000402/collection.json","data":[{"album":["Test"],"center":"GSFC","date_created":"2017-12-08T00:00:00Z","description":"By pushing NASA’s Hubble Space Telescope to its limits, an international team of astronomers has shattered the cosmic distance record by measuring the farthest galaxy ever seen in the universe. This surprisingly bright infant galaxy, named GN-z11, is seen as it was 13.4 billion years in the past, just 400 million years after the Big Bang. GN-z11 is located in the direction of the constellation of Ursa Major.  Read more: <a href=\"http://go.nasa.gov/1oSqHad\" rel=\"nofollow\">go.nasa.gov/1oSqHad</a>  <b><a href=\"http://www.nasa.gov/audience/formedia/features/MP_Photo_Guidelines.html\" rel=\"nofollow\">NASA image use policy.</a></b>  <b><a href=\"http://www.nasa.gov/centers/goddard/home/index.html\" rel=\"nofollow\">NASA Goddard Space Flight Center</a></b> enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission.  <b>Follow us on <a href=\"http://twitter.com/NASAGoddardPix\" rel=\"nofollow\">Twitter</a></b>  <b>Like us on <a href=\"http://www.facebook.com/pages/Greenbelt-MD/NASA-Goddard/395013845897?ref=tsd\" rel=\"nofollow\">Facebook</a></b>  <b>Find us on <a href=\"http://instagrid.me/nasagoddard/?vm=grid\" rel=\"nofollow\">Instagram</a></b>  ","keywords":["http://www.nasa.gov/feature/goddard/2016/hubble-team-breaks-cosmic-distance-record","space","nasa","hubble","nasagoddard"],"location":"Greenbelt, MD","media_type":"image","nasa_id":"GSFC_20171208_Archive_e000402","title":"http://www.nasa.gov/feature/goddard/2016/hubble-team-breaks-cosmic-distance-record"}],"links":[{"href":"https://images-assets.nasa.gov/image/GSFC_20171208_Archive_e000402/GSFC_20171208_Archive_e000402~small.jpg","rel":"alternate","render":"image","width":640,"size":32000,"height":360},{"href":"https://images-assets.nasa.gov/image/GSFC_20171208_Archive_e000402/GSFC_20171208_Archive_e000402~thumb.jpg","rel":"preview","render":"image","width":640,"size":32000,"height":360},{"href":"https://images-assets.nasa.gov/image/GSFC_20171208_Archive_e000402/GSFC_20171208_Archive_e000402~orig.jpg","rel":"canonical","render":"image"}]},{"href":"https://images-assets.nasa.gov/image/PIA06284/collection.json","data":[{"center":"JPL","date_created":"2004-06-17T17:50:53Z","description":"These images taken by NASA's Stardust spacecraft highlight the diverse features that make up the surface of comet Wild 2, showing a variety of small pinnacles and mesas seen on the limb of the comet and the location of a 2-kilometer (1.2-mile) series of aligned scarps, or cliffs, that are best seen in the stereo images.  http://photojournal.jpl.nasa.gov/catalog/PIA06284","description_508":"These images taken by NASA's Stardust spacecraft highlight the diverse features that make up the surface of comet Wild 2, showing a variety of small pinnacles and mesas seen on the limb of the comet and the location of a 2-kilometer (1.2-mile) series of aligned scarps, or cliffs, that are best seen in the stereo images.","keywords":["Wild 2","Stardust","comet"],"media_type":"image","nasa_id":"PIA06284","secondary_creator":"NASA/JPL-Caltech","title":"Wild 2 Features"}],"links":[{"href":"https://images-assets.nasa.gov/image/PIA06284/PIA06284~small.jpg","rel":"alternate","render":"image","width":640,"size":33000,"height":488},{"href":"https://images-assets.nasa.gov/image/PIA06284/PIA06284~thumb.jpg","rel":"preview","render":"image","width":640,"size":33000,"height":488},{"href":"https://images-assets.nasa.gov/image/PIA06284/PIA06284~orig.jpg","rel":"canonical","render":"image","height":742,"width":972,"size":61000}]},{"href":"https://images-assets.nasa.gov/image/PIA19047/collection.json","data":[{"center":"JPL","date_created":"2014-11-10T19:20:02Z","description":"Two Synthetic Aperture Radar (SAR) images from the radar experiment on NASA's Cassini spacecraft show that, between May 2013 and August 2014, a bright feature appeared in Kraken Mare, the largest hydrocarbon sea on Saturn's moon Titan. Researchers think the bright feature is likely representative of something on the hydrocarbon sea's surface, such as waves or floating debris.  A similar feature appeared in Ligea Mare, another Titan sea, and was seen to evolve in appearance between 2013 and 2014 (see PIA18430).  The image at left was taken on May 23, 2013 at an incidence angle of 56 degrees; the image at right was taken on August 21, 2014 at an incidence angle of 5 degrees. Incidence angle refers to the angle at which the radar beam strikes the surface.  http://photojournal.jpl.nasa.gov/catalog/PIA19047","description_508":"NASA Cassini radar instrument images show that a bright feature appeared in Kraken Mare, Titan largest sea.","keywords":["Titan","Cassini-Huygens"],"media_type":"image","nasa_id":"PIA19047","secondary_creator":"NASA/JPL-Caltech/ASI/Cornell","title":"Bright Feature Appears in Titan Kraken Mare"}],"links":[{"href":"https://images-assets.nasa.gov/image/PIA19047/PIA19047~small.jpg","rel":"alternate","render":"image","width":640,"size":21000,"height":310},{"href":"https://images-assets.nasa.gov/image/PIA19047/PIA19047~thumb.jpg","rel":"preview","render":"image","width":640,"size":21000,"height":310},{"href":"https://images-assets.nasa.gov/image/PIA19047/PIA19047~orig.jpg","rel":"canonical","render":"image","height":728,"width":1500,"size":67000}]},{"href":"https://images-assets.nasa.gov/image/PIA16877/collection.json","data":[{"center":"JPL","date_created":"2013-03-21T12:30:05Z","description":"ESA Planck mission has imaged the oldest light in our universe. The top map shows Planck all-sky map of the cosmic microwave background, whereas the bottom map shows the largest-scale features of the map.","description_508":"ESA Planck mission has imaged the oldest light in our universe. The top map shows Planck all-sky map of the cosmic microwave background, whereas the bottom map shows the largest-scale features of the map.","keywords":["Planck"],"media_type":"image","nasa_id":"PIA16877","secondary_creator":"ESA and the Planck Collaboration","title":"Peculiar Features in Patterns of Ancient Light"}],"links":[{"href":"https://images-assets.nasa.gov/image/PIA16877/PIA16877~medium.jpg","rel":"alternate","render":"image","width":1280,"size":153000,"height":720},{"href":"https://images-assets.nasa.gov/image/PIA16877/PIA16877~small.jpg","rel":"alternate","render":"image","width":640,"size":43000,"height":360},{"href":"https://images-assets.nasa.gov/image/PIA16877/PIA16877~thumb.jpg","rel":"preview","render":"image","width":640,"size":43000,"height":360},{"href":"https://images-assets.nasa.gov/image/PIA16877/PIA16877~orig.jpg","rel":"canonical","render":"image","height":1800,"width":3200,"size":759000}]},{"href":"https://images-assets.nasa.gov/image/PIA00490/collection.json","data":[{"center":"JPL","date_created":"1997-09-07T14:23:53Z","description":"This montage features activity in the turbulent region of Jupiter Great Red Spot GRS. Four sets of images of the GRS were taken by NASA Galileo imaging system over an 11.5 hour period on 26 June, 1996.","description_508":"This montage features activity in the turbulent region of Jupiter Great Red Spot GRS. 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The distance to Pluto ranges from 47 million kilometers (about 29 million miles) on June 5 to 31 million kilometers (19 million miles) on June 18. When various large, dark and bright regions appear near limbs, they give Pluto a distinct, but false, non-spherical appearance. Pluto is known to be almost perfectly spherical from previous data. These images are displayed at four times the native LORRI image size, and have been processed using a method called deconvolution, which sharpens the original images to enhance features on Pluto.   http://photojournal.jpl.nasa.gov/catalog/PIA19691","description_508":"These images from NASA New Horizons spacecraft show numerous large-scale features on Pluto surface. 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This representation is intentionally fanciful, as the planets are depicted far closer together than they really are.","description_508":"Our solar system features eight planets, seen in this artist’s diagram. This representation is intentionally fanciful, as the planets are depicted far closer together than they really are.","media_type":"image","nasa_id":"PIA11800","secondary_creator":"NASA/JPL","title":"Our Solar System Features Eight Planets"}],"links":[{"href":"https://images-assets.nasa.gov/image/PIA11800/PIA11800~medium.jpg","rel":"alternate","render":"image","width":1280,"size":189000,"height":803},{"href":"https://images-assets.nasa.gov/image/PIA11800/PIA11800~small.jpg","rel":"alternate","render":"image","width":640,"size":54000,"height":401},{"href":"https://images-assets.nasa.gov/image/PIA11800/PIA11800~thumb.jpg","rel":"preview","render":"image","width":640,"size":54000,"height":401},{"href":"https://images-assets.nasa.gov/image/PIA11800/PIA11800~large.jpg","rel":"alternate","render":"image","width":1920,"size":370000,"height":1205},{"href":"https://images-assets.nasa.gov/image/PIA11800/PIA11800~orig.jpg","rel":"canonical","render":"image","height":3627,"width":5775,"size":1842000}]},{"href":"https://images-assets.nasa.gov/image/PIA22054/collection.json","data":[{"center":"JPL","date_created":"2017-10-23T00:00:00Z","description":"This observation image from NASA's Mars Reconnaisance Orbiter (MRO) captures details regarding the evolution of gully features observed in a crater in Acidalia Planitia.  A Context Camera image provides context for these gullies showing an approximately 7-kilometer diameter crater in which we see that the gullies occur exclusively on the northern wall. This is unlike most of the observed gully sites in the northern Martian hemisphere, which typically have gullies on their pole-facing slopes. Another unique observation of this set of gullies is that they start mid-way down the crater's wall rather than cutting directly into the upper crater wall or rim.  The younger, more recently active fans are generally rougher than the older, smoother fans that are located near the base of the slope. Consistent with this interpretation, are a number of observed superposition and cross-cutting relationships. The rougher fans are always superimposed over the older, smoother ones.  Discontinuous fractures are observed to cross-cut only older features, while the most recently active portions of the gullies, in this case the channels or fans, are not cut by the fractures, but in some cases even superimpose them. 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With a diameter of about 755 miles, the Texas-sized moon is one of largest known objects in the Kuiper Belt, the region of icy, rocky bodies beyond Neptune.   https://photojournal.jpl.nasa.gov/catalog/PIA00442","description_508":"This annotated map projection from NASA's New Horizons spacecraft shows Charon, the largest of Pluto's five moons, annotated with its first set of official feature names.","keywords":["New Horizons","Charon","Pluto"],"media_type":"image","nasa_id":"PIA00442","secondary_creator":"NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute","title":"Charon's First Official Feature Names"}],"links":[{"href":"https://images-assets.nasa.gov/image/PIA00442/PIA00442~small.jpg","rel":"alternate","render":"image","width":640,"size":29000,"height":283},{"href":"https://images-assets.nasa.gov/image/PIA00442/PIA00442~thumb.jpg","rel":"preview","render":"image","width":640,"size":29000,"height":283},{"href":"https://images-assets.nasa.gov/image/PIA00442/PIA00442~orig.jpg","rel":"canonical","render":"image","height":1056,"width":2380,"size":849000}]},{"href":"https://images-assets.nasa.gov/video/GSFC_20171107_Ionosphere_m12532_ICON/collection.json","data":[{"album":["ICON"],"center":"GSFC","date_created":"2017-11-07T00:00:00Z","description":"Learn about the features of the ionosphere! This little-explored region exists between space and Earth. It is home to the aurora, the international space station, a variety of satellites, and radio communication waves. We know it is sensitive to weather from Earth and conditions in space, called space weather. Join us as we venture to this interface to space!","description_508":"Learn about the features of the ionosphere!","keywords":["Solar Wind","Weather","Atmosphere","Radio Wave","Airglow","Space Weather","Weather Patterns","ISS","Sun","Ionosphere/magnetosphere Dynamics","Coronal Mass Ejections","ICON","Gold"],"location":"Goddard Space Flight Center","media_type":"video","nasa_id":"GSFC_20171107_Ionosphere_m12532_ICON","secondary_creator":"Genna Duberstein, Krystofer Kim, Ryan Fitzgibbons, Robert C. Garner, Sarah L. 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It is located over 90 million light-years away in the constellation of Hydra.  NGC 3923 is an example of a shell galaxy where the stars in its halo are arranged in layers.  Finding concentric shells of stars enclosing a galaxy is quite common and is observed in many elliptical galaxies. In fact, every tenth elliptical galaxy exhibits this onion-like structure, which has never been observed in spiral galaxies. The shell-like structures are thought to develop as a consequence of galactic cannibalism, when a larger galaxy ingests a smaller companion. As the two centers approach, they initially oscillate about a common center, and this oscillation ripples outwards forming the shells of stars just as ripples on a pond spread when the surface is disturbed.  NGC 3923 has over twenty shells, with only a few of the outer ones visible in this image, and its shells are much more subtle than those of other shell galaxies. The shells of this galaxy are also interestingly symmetrical, while other shell galaxies are more skewed.  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