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{
"id": 14734,
"url": "https://svs.gsfc.nasa.gov/14734/",
"result_type": "Produced Video",
"release_date": "2024-12-10T10:00:00-05:00",
"title": "Lucy Spacecraft’s Second Slingshot of Earth",
"description": "NASA’s Lucy spacecraft will make its second of three Earth gravity assists on Dec. 12, 2024.Complete transcript available.Universal Production Music: “Determined Arrival 4-5” by Joel Goodman [ASCAP]; “Floating” by Nicholas Smith [PRS]; “Subtle Confidence 3” by Joel Goodman [ASCAP]Watch this video on the NASA Goddard YouTube channel. || Lucy-EGA2-Preview-V4_print.jpg (1024x576) [162.5 KB] || Lucy-EGA2-Preview-V4.jpg (1280x720) [574.7 KB] || Lucy-EGA2-Preview-V4.png (1280x720) [1.1 MB] || Lucy-EGA2-Preview-V4_searchweb.png (320x180) [84.0 KB] || Lucy-EGA2-Preview-V4_thm.png (80x40) [6.1 KB] || 14734_Lucy_EGA2_Overview_720.mp4 (1280x720) [40.2 MB] || 14734_Lucy_EGA2_Overview_1080.mp4 (1920x1080) [225.1 MB] || LucyEGA2Captions.en_US.srt [3.5 KB] || LucyEGA2Captions.en_US.vtt [3.3 KB] || 14734_Lucy_EGA2_Overview_4K.mp4 (3840x2160) [2.7 GB] || 14734_Lucy_EGA2_Overview_ProRes.mov (3840x2160) [16.6 GB] || 14734_Lucy_EGA2_Overview_4K.hwshow [478 bytes] || ",
"hits": 112
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{
"id": 14628,
"url": "https://svs.gsfc.nasa.gov/14628/",
"result_type": "Produced Video",
"release_date": "2024-08-28T11:30:00-04:00",
"title": "Discovering Earth’s Third Global Energy Field",
"description": "High above the Earth’s North and South Poles, a steady stream of particles escapes from our atmosphere into space. Scientists call this mysterious outflow the “polar wind,” and for almost 60 years, spacecraft have been flying through it as scientists have theorized about its cause. The leading theory was that a planet-wide electric field was drawing those particles up into space. But this so-called ambipolar electric field, if it exists, is so weak that all attempts to measure it have failed – until now.In 2022, scientists traveled to Svalbard, a small archipelago in Norway, to launch a rocket in an attempt to measure Earth’s ambipolar electric field for the first time. This was NASA’s Endurance rocketship mission, and this is its story.To learn more, visit: https://science.nasa.gov/science-research/heliophysics/nasa-discovers-long-sought-global-electric-field-on-earth/ || ",
"hits": 360
},
{
"id": 20372,
"url": "https://svs.gsfc.nasa.gov/20372/",
"result_type": "Animation",
"release_date": "2022-10-19T00:00:00-04:00",
"title": "Lucy Earth Gravity Assist One: Animations",
"description": "NASA’s Lucy mission is heading to the Jupiter Trojans – two swarms of primitive asteroids trapped in Jupiter’s orbit that may hold clues to the formation of the planets. Lucy launched on October 16, 2021, spent a year in orbit around the Sun, and returned home on its launch anniversary for the first of three Earth gravity assists. The maneuver boosted Lucy’s speed and elongated its orbit around the Sun, setting it track for a second flyby of Earth in December 2024. This page provides artist concept animations depicting Lucy’s first Earth gravity assist.Learn more about Lucy's first Earth gravity assist. || ",
"hits": 77
},
{
"id": 14225,
"url": "https://svs.gsfc.nasa.gov/14225/",
"result_type": "Produced Video",
"release_date": "2022-10-13T11:00:00-04:00",
"title": "Lucy Spacecraft Will Slingshot Around Earth",
"description": "NASA’s Lucy spacecraft will make an exceptionally close flyby of Earth on Oct. 16, 2022. Complete transcript available.Universal Production Music: “Determined Arrival 5” by Joel Goodman; “Finding Solace” by Eric Chevalier; “Subtle Confidence 3” by Joel GoodmanWatch this video on the NASA Goddard YouTube channel. || Lucy_EGA1_Preview_2_print.jpg (1024x576) [112.3 KB] || Lucy_EGA1_Preview_2.png (3840x2160) [12.5 MB] || Lucy_EGA1_Preview_2.jpg (3840x2160) [773.2 KB] || Lucy_EGA1_Preview_2_thm.png (80x40) [5.3 KB] || Lucy_EGA1_Preview_2_searchweb.png (180x320) [76.5 KB] || 14225_Lucy_EGA1_Twitter_V2.mp4 (1280x720) [52.4 MB] || 14225_Lucy_EGA1_Twitter_V2.webm (1280x720) [26.0 MB] || 14225_Lucy_EGA1_Facebook_V2.mp4 (1920x1080) [294.2 MB] || 14225_Lucy_EGA1_Captions_FINAL.en_US.srt [5.6 KB] || 14225_Lucy_EGA1_Captions_FINAL.en_US.vtt [5.3 KB] || 14225_Lucy_EGA1_YouTube_V2.mp4 (3840x2160) [3.6 GB] || 14225_Lucy_EGA1_MASTER_V2.mov (3840x2160) [23.8 GB] || ",
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{
"id": 20362,
"url": "https://svs.gsfc.nasa.gov/20362/",
"result_type": "Animation",
"release_date": "2022-07-07T15:20:00-04:00",
"title": "Gravity on the Moon vs. Asteroid Bennu: Animation",
"description": "The lunar surface is better at resisting impacts than the loose surface of asteroid Bennu – thanks to the Moon’s much stronger gravity. || OREX-MoonvsBennuMograph-ProRes.00240_print.jpg (1024x576) [74.2 KB] || OREX-MoonvsBennuMograph-ProRes.00240_searchweb.png (320x180) [60.3 KB] || OREX-MoonvsBennuMograph-ProRes.00240_thm.png (80x40) [4.3 KB] || OREX-MoonvsBennuMograph-ProRes_1080.mp4 (1920x1080) [58.2 MB] || 3840x2160_16x9_30p (3840x2160) [128.0 KB] || OREX-MoonvsBennuMograph-ProRes.webm (3840x2160) [8.7 MB] || OREX-MoonvsBennuMograph-ProRes.mov (3840x2160) [3.2 GB] || OREX-MoonvsBennuMograph-ProRes_4K.mp4 (3840x2160) [238.1 MB] || ",
"hits": 227
},
{
"id": 13896,
"url": "https://svs.gsfc.nasa.gov/13896/",
"result_type": "Animation",
"release_date": "2021-08-11T13:00:00-04:00",
"title": "OSIRIS-REx Sheds Light on Hazardous Asteroid Bennu",
"description": "OSIRIS-REx is improving our understanding of asteroid Bennu’s future impact hazard.Complete transcript available.Universal Production Music: “Time Particles” by Laetitia FrenodWatch this video on the NASA Goddard YouTube channel. || BennuImpactHazardPreview_print.jpg (1024x576) [110.3 KB] || BennuImpactHazardPreview.png (3840x2160) [5.2 MB] || BennuImpactHazardPreview.jpg (3840x2160) [1.1 MB] || BennuImpactHazardPreview_searchweb.png (180x320) [45.8 KB] || BennuImpactHazardPreview_thm.png (80x40) [3.5 KB] || TWITTER_720_13896_Bennu_Impact_Hazard_MASTER_twitter_720.mp4 (1280x720) [29.3 MB] || 13896_Bennu_Impact_Hazard_MASTER.webm (960x540) [47.1 MB] || FACEBOOK_720_13896_Bennu_Impact_Hazard_MASTER_facebook_720.mp4 (1280x720) [180.0 MB] || 13896_Bennu_Impact_Hazard_Captions.en_US.srt [4.0 KB] || 13896_Bennu_Impact_Hazard_Captions.en_US.vtt [3.8 KB] || 13896_Bennu_Impact_Hazard_SPANISH.mp4 (3840x2160) [200.8 MB] || 13896_Bennu_Impact_Hazard_YouTube.mp4 (3840x2160) [1.7 GB] || 13896_Bennu_Impact_Hazard_MASTER.mov (3840x2160) [18.6 GB] || ",
"hits": 182
},
{
"id": 20356,
"url": "https://svs.gsfc.nasa.gov/20356/",
"result_type": "Animation",
"release_date": "2021-08-11T00:00:00-04:00",
"title": "Asteroid Bennu Impact Hazard: Animations",
"description": "On September 25, 2135, an asteroid called Bennu will make a close flyby of Earth. Our planet’s gravity will tweak Bennu’s path, making it a challenge to calculate its future trajectory and the odds of a potential impact late in the 22nd century. This media resource page provides broadcast-quality animations related to asteroid Bennu’s impact hazard. Learn more from NASA.Watch the produced video on the NASA Goddard YouTube Channel. || ",
"hits": 126
},
{
"id": 31034,
"url": "https://svs.gsfc.nasa.gov/31034/",
"result_type": "Hyperwall Visual",
"release_date": "2019-04-22T10:00:00-04:00",
"title": "Galaxy Cluster Abell S1063",
"description": "Massive galaxy cluster Abell S1063 is shown at the center of this Hubble image, surrounded by more distant galaxies that are magnified and warped by the cluster’s immense gravity. A faint haze of intracluster light is visible between the galaxies, produced by free-floating stars. || STSCI-H-p1856c-m-1786x2000.png (1786x2000) [5.7 MB] || STSCI-H-p1856c-m-1786x2000_print.jpg (1024x1146) [274.8 KB] || STSCI-H-p1856c-f-4158x4656.png (4158x4656) [26.4 MB] || STSCI-H-p1856c-m-1786x2000_searchweb.png (320x180) [97.9 KB] || STSCI-H-p1856c-m-1786x2000_thm.png (80x40) [7.7 KB] || STSCI-H-p1856c-f-4158x4656.tif (4158x4656) [31.9 MB] || galaxy-cluster-abell-s1063.hwshow [220 bytes] || ",
"hits": 66
},
{
"id": 31016,
"url": "https://svs.gsfc.nasa.gov/31016/",
"result_type": "Hyperwall Visual",
"release_date": "2018-12-20T10:00:00-05:00",
"title": "Whale Galaxy Panorama",
"description": "NGC 4631, the Whale galaxy, shows us the edge of its spiral, appearing similar to the single arm of the Milky Way visible to us in the night sky. || STScI-H-Whale_galaxy-h-4467x1217.png (4467x1217) [10.0 MB] || STScI-H-Whale_galaxy-f-8933x2434.png (8933x2434) [36.0 MB] || STScI-H-Whale_galaxy-h-4467x1217_print.jpg (1024x278) [65.7 KB] || STScI-H-Whale_galaxy-h-4467x1217_print_searchweb.png (320x180) [105.6 KB] || STScI-H-Whale_galaxy-h-4467x1217_print_thm.png (80x40) [7.3 KB] || STScI-H-Whale_galaxy-f-8933x2434.png.dzi (8933x2434) [178 bytes] || STScI-H-Whale_galaxy-f-8933x2434.png_files (1x1) [4.0 KB] || whale-galaxy-panorama.hwshow [198 bytes] || ",
"hits": 112
},
{
"id": 30996,
"url": "https://svs.gsfc.nasa.gov/30996/",
"result_type": "Hyperwall Visual",
"release_date": "2018-10-03T00:00:00-04:00",
"title": "GRACE-FO First Light",
"description": "The Gravity Recovery and Climate Experiment Follow-on (GRACE-FO) mission, launched on May 22, 2018 is a successor to the original 2002 GRACE mission, which monitored Earth's gravity by measuring the distance between two satllites following each other in orbit around Earth. In addition to carrying on the original series of measurements made by a microwave ranging system, the GRACE FO mission will test a new laser ranging interferometer, which will provide higher precision distance measurements.These two images show the first data from the Microwave Ranging Instrument and the Laser Ranging Interferometer (LRI) instrument onboard GRACE FO. The raw data for both instruments is a plot of inter-spacecraft distance, which changes as the spacecraft pass over varying mass distribution caused by features on Earth such as large mountain ranges.The Gravity Recovery and Climate Experiment Follow-on (GRACE-FO) mission is a partnership between NASA and the German Research Centre for Geosciences (GFZ). || ",
"hits": 29
},
{
"id": 20251,
"url": "https://svs.gsfc.nasa.gov/20251/",
"result_type": "Animation",
"release_date": "2017-09-22T09:00:00-04:00",
"title": "OSIRIS-REx Earth Gravity Assist",
"description": "When OSIRIS-REx flies by Earth on September 22, 2017, it will use our planet's gravity as a slingshot to catch asteroid Bennu. Complete transcript available.Watch this video on the NASA Goddard YouTube channel.Music provided by Killer Tracks:\"Origin\" by Axel Tenner, Michael Schluecker, and Raphael Schalz || 20251_OSIRIS-REx_Earth_Gravity_Assist_FB.mp4 (1280x720) [138.9 MB] || EGA_1_Flyby_Preview.jpg (3840x2160) [742.5 KB] || EGA_1_Flyby_Preview_searchweb.png (320x180) [79.0 KB] || EGA_1_Flyby_Preview_thm.png (80x40) [5.5 KB] || 20251_OSIRIS-REx_Earth_Gravity_Assist_TWTR.mp4 (1280x720) [24.6 MB] || WEBM-20251_OSIRIS-REx_Earth_Gravity_Assist_APR.webm (960x540) [46.8 MB] || 20251_OSIRIS-REx_Earth_Gravity_Assist_FB_Output.en_US.srt [1.4 KB] || 20251_OSIRIS-REx_Earth_Gravity_Assist_FB_Output.en_US.vtt [1.4 KB] || 20251_OSIRIS-REx_Earth_Gravity_Assist_YT.mp4 (3840x2160) [1.7 GB] || 20251_OSIRIS-REx_Earth_Gravity_Assist_APR.mov (3840x2160) [10.2 GB] || ",
"hits": 115
},
{
"id": 4499,
"url": "https://svs.gsfc.nasa.gov/4499/",
"result_type": "Visualization",
"release_date": "2016-10-21T00:00:00-04:00",
"title": "Orientale Impact Basin for the Cover of Science",
"description": "This print-resolution still image was created for the cover of the October 28, 2016 issue of Science. It features a free-air gravity map of the Orientale impact basin based on data returned by the Gravity Recovery and Interior Laboratory (GRAIL) mission.Orientale is about 930 kilometers wide and lies on the western limb of the Moon as viewed from Earth. It's the Moon's youngest and best-preserved large impact basin, formed about 3.8 billion years ago at the end of the conjectured Late Heavy Bombardment. A paper in Science by Maria Zuber et al. uses the GRAIL data to shed new light on the basin's geology, while a second paper by Brandon Johnson et al. describes a computer simulation of the basin's formation constrained by that data.The shaded relief in this image is not a photograph. It's a very accurate computer rendering based on a digital model of the terrain. The model is derived from a digital elevation map called SLDEM2015. This map combines data from the laser altimeter (LOLA) on NASA's Lunar Reconnaissance Orbiter (LRO) with stereo imagery from the Terrain Camera on the Japan Space Agency's SELENE spacecraft.The angle of the virtual Sun was chosen to throw Orientale's terrain into high relief — it's just after sunrise at Orientale, about a day past full Moon. The camera is on the western terminator (day/night line) looking north.The colorful part is the gravity anomaly based on measurements by GRAIL. Red indicates areas of higher gravity, or excess mass, and blue indicates lower gravity or areas of mass deficits. The GRAIL data reveals the structure of the basin beneath the surface. The red in the center of the basin, for example, shows that the crust is particularly thin there, and that denser mantle material is closer to the surface. || ",
"hits": 383
},
{
"id": 12208,
"url": "https://svs.gsfc.nasa.gov/12208/",
"result_type": "Produced Video",
"release_date": "2016-06-20T09:00:00-04:00",
"title": "The Electric Wind of Venus",
"description": "Venus has an \"electric wind\" strong enough to remove the components of water from its upper atmosphere. This action may have played a significant role in stripping Earth's twin planet of its oceans, according to new research results from the European Space Agency's Venus Express mission led by NASA-funded researchers. Lead author of the research paper, Glyn Collinson, explains that \"electric wind\" can strip Earth-like planets of oceans and atmospheres. || ",
"hits": 120
},
{
"id": 4436,
"url": "https://svs.gsfc.nasa.gov/4436/",
"result_type": "Visualization",
"release_date": "2016-03-21T12:30:00-04:00",
"title": "GMM-3 Mars Gravity Map",
"description": "Scientists have used small fluctuations in the orbits of three NASA spacecraft to map the gravity field of Mars.Watch this video on the NASA Goddard YouTube channel.Complete transcript available.This video is also available on our YouTube channel. || MarsGravityMapYouTube.png (1920x1080) [7.9 MB] || MarsGravityMapYouTube.jpg (1920x1080) [706.6 KB] || APPLE_TV_G2016-003_Mars_Gravity_Map_MASTER_appletv.m4v (1280x720) [51.0 MB] || WEBM_G2016-003_Mars_Gravity_Map_MASTER.webm (960x540) [43.4 MB] || APPLE_TV_G2016-003_Mars_Gravity_Map_MASTER_appletv_appletv_subtitles.m4v (1280x720) [15.5 MB] || LARGE_MP4_G2016-003_Mars_Gravity_Map_MASTER_large.mp4 (1920x1080) [109.0 MB] || NASA_TV_G2016-003_Mars_Gravity_Map_MASTER.mpeg (1280x720) [362.0 MB] || G2016-003_Mars_Gravity_Map_MASTER_GoogOut.en_US.srt [1.8 KB] || G2016-003_Mars_Gravity_Map_MASTER_GoogOut.en_US.vtt [1.9 KB] || G2016-003_Mars_Gravity_Map_MASTER.mov (1920x1080) [2.9 GB] || ",
"hits": 177
},
{
"id": 4258,
"url": "https://svs.gsfc.nasa.gov/4258/",
"result_type": "Visualization",
"release_date": "2015-02-06T00:00:00-05:00",
"title": "Mercury Mascons for the Cover of JGR Planets",
"description": "A gravity map of Mercury shows mass concentrations (red) centered on the Caloris basin (center) and the Sobkou region (right limb). || mercury_jgr_print.jpg (1024x1280) [170.5 KB] || mercury_jgr_print_ipad_poster_frame.jpg (1024x576) [113.1 KB] || mercury_jgr_web.jpg (320x400) [19.5 KB] || mercury_jgr_searchweb.png (320x180) [71.9 KB] || mercury_jgr_thm.png (80x40) [5.2 KB] || mercury_jgr.tif (2400x3000) [5.7 MB] || ",
"hits": 25
},
{
"id": 4218,
"url": "https://svs.gsfc.nasa.gov/4218/",
"result_type": "Visualization",
"release_date": "2014-10-01T00:00:00-04:00",
"title": "Procellarum Rifts for the Cover of Nature",
"description": "Oceanus Procellarum, or the Ocean of Storms, is the largest of the dark maria visible to the naked eye on the near side of the Moon. Its relatively flat surface of basaltic lava covers most of the northwest quadrant of the Moon's disk.The leading explanation of Procellarum's origin is that it is a large, ancient impact basin. But the authors of a paper in the October 2, 2014 edition of the journal Nature suggest instead that this region is the result of the way the lunar crust cooled billions of years ago.The red in the image shown here is part of a pattern of gravity anomalies revealed by data from the Gravity Recovery and Interior Laboratory (GRAIL) mission. Jeffrey Andrews-Hanna and his coathors interpret this rectangular feature as a remnant of the plumbing system that moved magma to the surface of the Moon's near side, flooding low-lying areas with lava.The rectangular shape differs from the circular shape expected for an impact basin. It more closely resembles the pattern of cracks that form in materials subjected to thermal stress. In fact, the paper compares the shape of the Procellarum gravity anomaly with a feature spanning the south pole of Enceladus, the ice-covered moon of Saturn. || ",
"hits": 102
},
{
"id": 4205,
"url": "https://svs.gsfc.nasa.gov/4205/",
"result_type": "Visualization",
"release_date": "2014-09-24T09:00:00-04:00",
"title": "Earth Science Heads-up Display",
"description": "On September 10, 2014, NASA's Earth Observing System (EOS) was celebrated in an evening event at the Smithsonian National Air and Space Museum in Washington DC. The title of this event was \"Vital Signs: Taking the Pulse of Our Planet\", and the speakers at this event included several Earth Scientists from Goddard Space Flight Center. This animation was used in the beginning of the event to illustrate the interconnectedness of the many Earth-based data sets that NASA has produced over the last decade or so. The animation simulates a view of the Earth from the International Space Station, over which interconnected data sets are displayed as if on a head-up display. || ",
"hits": 50
},
{
"id": 4175,
"url": "https://svs.gsfc.nasa.gov/4175/",
"result_type": "Visualization",
"release_date": "2014-06-17T00:00:00-04:00",
"title": "GRAIL Gravity Map for the Cover of Geophysical Research Letters",
"description": "This print-resolution still image was created for the cover of the May 28, 2014 issue of Geophysical Research Letters. It features a free-air gravity map of the Moon's southern latitudes developed by S. Goossens et al. from data returned by the Gravity Recovery and Interior Laboratory (GRAIL) mission.If the Moon were a perfectly smooth sphere of uniform density, the gravity map would be a single, featureless color, indicating that the force of gravity at a given elevation was the same everywhere. But like other rocky bodies in the solar system, including Earth, the Moon has both a bumpy surface and a lumpy interior. Spacecraft in orbit around the Moon experience slight variations in gravity caused by both of these irregularities.The free-air gravity map shows deviations from the mean gravity that a cueball Moon would have. The deviations are measured in milliGals, a unit of acceleration. On the map, purple is at the low end of the range, at around -400 mGals, and red is at the high end near +400 mGals. Yellow denotes the mean.The map shown here extends from the south pole of the Moon up to 50°S and reveals the gravity for that region in even finer detail than the global gravity maps published previously. The image illustrates the very good correlation between the gravity map and topographic features such as peaks and craters, as well as the mass concentration lying beneath the large Schrödinger basin in the center of the frame. The terrain in the image is based on Lunar Reconnaissance Orbiter (LRO) altimeter and camera data. || ",
"hits": 138
},
{
"id": 30503,
"url": "https://svs.gsfc.nasa.gov/30503/",
"result_type": "Hyperwall Visual",
"release_date": "2014-05-13T00:00:00-04:00",
"title": "Ocean Bottom Pressure from GRACE",
"description": "The twin Gravity Recovery and Climate Experiment (GRACE) satellites, launched on March 17, 2002, have been making detailed measurements of Earth’s gravity field from space and revolutionizing investigations about Earth's ocean, water reservoirs, large-scale solid Earth changes, and ice cover.To aid in the interpretation of gravity change over the oceans, the GRACE Tellus project provides ocean bottom pressure maps derived from the GRACE satellite data. Ocean bottom pressure is the sum of the mass of the atmosphere and ocean in a \"cylinder\" above the seafloor. This visualization shows monthly changes in ocean bottom pressure data obtained by the GRACE satellites from November 2002 to January 2012. Purple and blue shades indicate regions with relatively low ocean bottom pressure, while red and white shades indicate regions with relatively high ocean bottom pressure. Scientists use these data to observe and monitor changes in deep ocean currents, which transport water and energy around the globe. || ",
"hits": 60
},
{
"id": 11437,
"url": "https://svs.gsfc.nasa.gov/11437/",
"result_type": "Produced Video",
"release_date": "2014-01-06T10:00:00-05:00",
"title": "First Gamma-ray Measurement of a Gravitational Lens",
"description": "Astronomers using NASA's Fermi observatory have made the first gamma-ray measurements of a gravitational lens, a kind of natural telescope formed when a rare cosmic alignment allows the gravity of a massive object to bend and amplify light from a more distant source.The opportunity arose in September 2012, when Fermi's Large Area Telescope (LAT) detected a series of bright gamma-ray flares from a source known as B0218+357, located 4.35 billion light-years away in the constellation Triangulum. These powerful outbursts in a known gravitational lens provided the key to making the measurement. Astronomers classify B0218+357 as a blazar, a type of active galaxy noted for intense outbursts. At the blazar's heart is a supersized black hole with a mass millions to billions of times that of the sun. As matter spirals toward this black hole, some of it blasts outward as jets of particles traveling near the speed of light in opposite directions.Long before light from B0218+357 reaches us, it passes directly through a spiral galaxy – one much like our own – located 4.03 billion light-years away. The galaxy's gravity bends the light into different paths, so astronomers see the background blazar as dual images. But these paths aren't the same length, which means that when one image flares, there's a delay of many days before the other does.While radio and optical telescopes can resolve and monitor the individual blazar images, Fermi's LAT cannot. Instead, the Fermi team exploited the playback delay between the images. In September 2012, when the blazar's flaring activity made it the brightest gamma-ray source outside of our own galaxy, Fermi scientists took advantage of the opportunity by using a week of dedicated LAT time to hunt for delayed flares. Three episodes of flares showing playback delays of 11.46 days were found, with the strongest evidence in a sequence of flares captured during the week-long LAT observations. || ",
"hits": 118
},
{
"id": 4054,
"url": "https://svs.gsfc.nasa.gov/4054/",
"result_type": "Visualization",
"release_date": "2013-03-19T13:00:00-04:00",
"title": "LAMP Observes GRAIL Impact",
"description": "The Gravity Recovery and Interior Laboratory (GRAIL) mission comprised a pair of satellites that together measured the gravity field of the Moon. GRAIL ended its mission with a planned impact into the side of a lunar mountain on December 17, 2012. Lunar Reconnaissance Orbiter (LRO) maneuvered into an orbit that would allow it to observe the impact. One of LRO's instruments, the Lyman-Alpha Mapping Project (LAMP), looked for the chemical signatures of a number of elements, including hydrogen and mercury, in the dust plume kicked up by the impact.This animation shows the relative positions of GRAIL and LRO at the time of the impact, as well as the view from LAMP as it scanned for the dust plume. The LAMP sensor is a 6.0° x 0.3° slit that was positioned to look over the limb of the Moon, so that it would be pointed into the tenuous dust plume with only the sky in the background. This observation was possible, in part, because GRAIL impacted on the night side of the Moon, where there was no concern that LAMP's sensitive detector could be blinded by sunlit terrain. From Earth, the Moon was a waxing crescent at the time of the impact. || ",
"hits": 41
},
{
"id": 4041,
"url": "https://svs.gsfc.nasa.gov/4041/",
"result_type": "Visualization",
"release_date": "2013-02-08T00:00:00-05:00",
"title": "GRAIL Free-Air Gravity Map for the Cover of Science",
"description": "These print-resolution stills were created for the cover of the February 8, 2013 issue of Science. They show the free-air gravity map developed by the Gravity Recovery and Interior Laboratory (GRAIL) mission.If the Moon were a perfectly smooth sphere of uniform density, the gravity map would be a single, featureless color, indicating that the force of gravity at a given elevation was the same everywhere. But like other rocky bodies in the solar system, including Earth, the Moon has both a bumpy surface and a lumpy interior. Spacecraft in orbit around the Moon experience slight variations in gravity caused by both of these irregularities.The free-air gravity map shows deviations from the mean, the gravity that a cueball Moon would have. The deviations are measured in milliGals, a unit of acceleration. On the map, dark purple is at the low end of the range, at around -400 mGals, and red is at the high end near +400 mGals. Yellow denotes the mean.These views show a part of the Moon's surface that's never visible from Earth. They are centered on lunar coordinates 29°N 142°E. The large, multi-ringed impact feature near the center is Mare Moscoviense. The crater Mendeleev is south of this. The digital elevation model for the terrain is from the Lunar Reconnaissance Orbiter laser altimeter (LOLA). Merely for plausibility, the sun angle and starry background are accurate for specific dates (December 21, 2012, 0:00 UT and January 8, 2013, 14:00 UT, respectively). || ",
"hits": 193
},
{
"id": 4023,
"url": "https://svs.gsfc.nasa.gov/4023/",
"result_type": "Visualization",
"release_date": "2012-12-17T09:00:00-05:00",
"title": "GRAIL Impacts the Moon",
"description": "The Gravity Recovery and Interior Laboratory (GRAIL) mission comprises a pair of satellites launched in September, 2011 and placed in orbit around the Moon in January, 2012. The two satellites, named Ebb and Flow, used radio signals to precisely measure their separation as they flew in formation, one following the other in the same nearly circular polar orbit. These measurements allowed mission scientists to build up an accurate and detailed gravity map of the Moon.GRAIL ends its successful mission by impacting the Moon on December 17, 2012 at approximately 5:27 p.m. EST (22:27 UT). The two spacecraft were placed in an orbit that takes them within a kilometer of the surface, so low that they will hit the side of an unnamed mountain that lies between Mouchez and Philolaus craters, near the north pole at 75°45'N, 26°11'W. Ebb strikes first, followed 24 seconds later by Flow.This animation shows the last three orbits of the two spacecraft, with views of the impact site. The impact occurs on the night side of a waxing crescent Moon, so the view shifts from a natural color Moon to a false-color elevation map. || ",
"hits": 203
},
{
"id": 4014,
"url": "https://svs.gsfc.nasa.gov/4014/",
"result_type": "Visualization",
"release_date": "2012-12-05T12:00:00-05:00",
"title": "GRAIL Primary Mission Gravity Maps (AGU 2012)",
"description": "The Gravity Recovery and Interior Laboratory (GRAIL) mission comprises a pair of satellites launched in September, 2011 and placed in orbit around the Moon in January, 2012. The two satellites, named Ebb and Flow, used radio signals to precisely measure their separation as they flew in formation, one following the other in the same nearly circular polar orbit. These measurements allowed mission scientists to build up an accurate and detailed gravity map of the Moon.If the Moon were a perfectly smooth sphere of uniform density, the gravity experienced by the spacecraft would be exactly the same everywhere. But like other rocky bodies in the solar system, including the Earth, the Moon has both a bumpy surface and a lumpy interior. As the spacecraft fly in their orbits, they experience slight variations in gravity caused by both of these irregularities, variations which show up as small changes in the separation of the two spacecraft.The free-air gravity map shows these variations directly. (Free-air is a historical term; there is, of course, no air on the Moon.) The Bouguer gravity map subtracts the effect of the bumpy surface to show the lumpiness underneath. The elevation maps from the laser altimeter on Lunar Reconnaissance Orbiter (LRO) were used to create a model of what the gravity would be if the Moon were bumpy but not lumpy. This model was then subtracted from the free-air map to produce the Bouguer map. (Note: The Bouguer map shown here was filtered to emphasize smaller features; harmonic degrees 1 to 6 were excluded.)The crustal thickness map is inferred from the Bouguer map: If the density of the crust is assumed to be uniform, then the gravity anomalies visible in the Bouguer gravity map can be explained by variations in the thickness of the crust. Highs in gravity indicate places where the denser mantle is closer to the surface, and hence where the crust is thinner.While aiding navigation for future lunar missions, GRAIL's gravity measurements reveal information about the internal structure of the Moon, improving our understanding of the origin and development of not just the Moon, but also the Earth and the rest of the inner solar system. || ",
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},
{
"id": 10116,
"url": "https://svs.gsfc.nasa.gov/10116/",
"result_type": "Produced Video",
"release_date": "2011-03-17T00:00:00-04:00",
"title": "Afterschool Universe",
"description": "Afterschool Universe is an out-of-school-time astronomy program for middle school students that explores basic astronomy concepts through engaging hands-on activities and then takes participants on a journey through the Universe beyond the Solar System. These videos are designed for instructors using the Afterschool Universe program. They are designed to give a better understanding of the assembly, technique and layout of some of the more complicated demonstrations. || ",
"hits": 68
},
{
"id": 3818,
"url": "https://svs.gsfc.nasa.gov/3818/",
"result_type": "Visualization",
"release_date": "2011-02-02T00:00:00-05:00",
"title": "Earth Science Decadal Survey Missions",
"description": "This animated graphic outlines the 15 NASA Earth science missions recommended by the National Research Council in its decadal survey report, published in 2007. These future missions will form the basis of a systematic space-based study of the Earth. For more information about the survey and the missions, see this NASA Science article, this decadal survey Web site, and the NRC's report. || ",
"hits": 39
},
{
"id": 10543,
"url": "https://svs.gsfc.nasa.gov/10543/",
"result_type": "Produced Video",
"release_date": "2010-01-26T00:00:00-05:00",
"title": "Neutron Star Merge",
"description": "Binary systems containing neutron stars are born when the cores of two orbiting stars collapse in supernova explosions. Neutron stars pack the mass of our sun into the size of a city. They are so dense and packed so tightly that the boundaries atoms nuclei disappear. In such systems, Einstein's theory of general relativity predicts that neutron stars emit gravitational radiation, ripples of space-time. This causes the orbits to shrink and gradually brings the neutron stars closer together. Shown here is such a system after about 1 billion years, when two equal-mass neutron whirl around each other at 60,000 times a minute. The stars merge in a few milliseconds, sending out a burst of gravitational waves and a brief, intense gamma-ray burst. || ",
"hits": 376
},
{
"id": 3671,
"url": "https://svs.gsfc.nasa.gov/3671/",
"result_type": "Visualization",
"release_date": "2010-01-14T12:00:00-05:00",
"title": "Amazon Basin Monthly GRACE Data",
"description": "This visualization displays monthly GRACE data in the Amazon basin. GRACE (Gravity Recovery and Climate Experiment) measures mass distribution and in this instance is used to demonstrate water storage and movement in the basin. Warmer colors like red and yellow reveal areas with greater mass, or more water, while cooler colors like blue and green indicate areas with lesser mass, or less water. || ",
"hits": 123
},
{
"id": 3655,
"url": "https://svs.gsfc.nasa.gov/3655/",
"result_type": "Visualization",
"release_date": "2009-11-24T14:30:00-05:00",
"title": "GRACE Gravity Model",
"description": "The following animation displays the Earth's gravitational anomalies. The colors and heights represent the strength of gravity at the locality. Areas with less mass, such as ocean basins, show up as blue, that is less gravity, while mountains such as the Andes are red, representing the greater pull of gravity. The visualization utilizes a version of the GRACE Gravity Model 02 that has been smoothed for greater readability. || ",
"hits": 430
},
{
"id": 10510,
"url": "https://svs.gsfc.nasa.gov/10510/",
"result_type": "Produced Video",
"release_date": "2009-10-28T00:00:00-04:00",
"title": "Einstein's Cosmic Speed Limit",
"description": "In its first year of operations, NASA's Fermi Gamma-ray Space Telescope has mapped the entire sky with unprecedented resolution and sensitivity in gamma-rays, the highest-energy form of light. On May 10, 2009 a pair of gamma-ray photons reached Fermi only 900 milliseconds apart after traveling for 7 billion years. Fermi's measurement gives us rare experimental evidence that space-time is smooth as Einstein predicted, and has shut the door on several approaches to gravity where space-time is foamy enough to interfere strongly with light.Watch this video on the NASAexplorer YouTube channel.For complete transcript, click here. || Einsteins_Cosmic_Speed_Limit_512x288_web.png (320x180) [223.5 KB] || Einsteins_Cosmic_Speed_Limit_512x288_thm.png (80x40) [16.5 KB] || Einsteins_Cosmic_Speed_Limit_Thumbnail.jpg (346x260) [107.4 KB] || Einsteins_Cosmic_Speed_Limit_AppleTV.webmhd.webm (960x540) [82.4 MB] || Einsteins_Cosmic_Speed_Limit_AppleTV.m4v (960x540) [208.4 MB] || Einsteins_Cosmic_Speed_Limit_1280x720_H264.mov (1280x720) [433.5 MB] || Einsteins_Cosmic_Speed_Limit_1280x720_ProRes.mov (1280x720) [5.2 GB] || Einsteins_Cosmic_Speed_Limit_640x480_ipod.m4v (640x360) [68.6 MB] || Einsteins_Cosmic_Speed_Limit_512x288.mpg (512x288) [38.3 MB] || Einsteins_Cosmic_Speed_Limit_320x240.mp4 (320x180) [26.5 MB] || GSFC_20091029_EinsteinsCosmicSpeedLimit.wmv (346x236) [38.4 MB] || ",
"hits": 141
},
{
"id": 10512,
"url": "https://svs.gsfc.nasa.gov/10512/",
"result_type": "Produced Video",
"release_date": "2009-10-27T00:00:00-04:00",
"title": "Science for a Hungry World: Growing Water Problems",
"description": "One of the biggest changes to global agriculture is less about the food itself as it is about the water we use to grow it. In some areas, farmers are using freshwater resources - including groundwater - at an alarming rate. The GRACE satellites enable scientists to discover changes to underground aquifers by monitoring changes in the Earth's gravity. In northern India, farmers rely heavily on irrigation to grow crops, and the resulting massive aquifer depletion creates an uncertain future for the region. For complete transcript, click here. || Agriculture_Episode_5_Water_512x288.05177_print.jpg (1024x576) [180.7 KB] || Agriculture_Episode_5_Water_512x288_web.png (320x180) [321.0 KB] || Agriculture_Episode_5_Water_512x288_thm.png (80x40) [18.0 KB] || Agriculture_Episode_5_Water_960x540_AppleTV.webmhd.webm (960x540) [72.9 MB] || Agriculture_Episode_5_Water_1280x720_Youtube.mov (1280x720) [76.1 MB] || Agriculture_Episode_5_Water_960x540_AppleTV.m4v (960x540) [176.9 MB] || Agriculture_Episode_5_Water_1280x720_H264.mov (1280x720) [135.9 MB] || Agriculture_Episode_5_Water_640x480_ipod.m4v (640x360) [52.9 MB] || Agriculture_Episode_5_Water_512x288.mpg (512x288) [159.1 MB] || Agriculture_Episode_5_Water_320x240.mp4 (320x180) [23.2 MB] || bigmovie-science_for_a_hungry_world_5-water_problems.hwshow || ",
"hits": 26
},
{
"id": 10480,
"url": "https://svs.gsfc.nasa.gov/10480/",
"result_type": "Produced Video",
"release_date": "2009-08-14T00:00:00-04:00",
"title": "GRACE Beauty Pass Animations",
"description": "GRACE, Gravity Recovery And Climate Experiment - twin satellites launched in March 2002, are making detailed measurements of Earth's gravity field which will lead to discoveries about gravity and Earth's natural systems. These discoveries could have far-reaching benefits to society and the world's population. || ",
"hits": 38
},
{
"id": 3591,
"url": "https://svs.gsfc.nasa.gov/3591/",
"result_type": "Visualization",
"release_date": "2009-04-09T00:00:00-04:00",
"title": "STEREO Visits the Lagrange Points - L4 and L5",
"description": "The two STEREO spacecraft orbit the Sun in orbits slightly different from the Earth. STEREO A orbits between the Earth and the Sun, while STEREO-B orbits beyond the Earth and the Sun. As a result, relative to the Earth, STEREO-A appears to move ahead of the Earth, while STEREO-B falls behind the Earth, in their motion around the Sun.In this configuration, the two spacecraft are now passing near the two stable Lagrange Points, L4 and L5, of the Earth-Sun system. The STEREO spacecraft are imaging these regions in the hopes of finding material that might have been left over from the original formation of the Solar System.Revision Note: April 15, 2009:It was pointed out that L4 and L5 were reversed in the initial release of this visualization. These animations and stills were revised to reflect the corrections. We apologize for any inconvenience. || ",
"hits": 174
},
{
"id": 1089,
"url": "https://svs.gsfc.nasa.gov/1089/",
"result_type": "Visualization",
"release_date": "2000-03-01T12:00:00-05:00",
"title": "MOLA Surface Topography With Gravity Texture Map",
"description": "Rotating Mars showing variations in gravity. || Rotating Mars with colors indicating the strength of the gravitational field. || a001089.00005_print.png (720x480) [489.9 KB] || Gravity_pre.jpg (320x240) [9.2 KB] || a001089_pre.jpg (320x242) [7.8 KB] || a001089.webmhd.webm (960x540) [4.9 MB] || a001089.dv (720x480) [179.2 MB] || a001089.mp4 (640x480) [9.8 MB] || Gravity.mov (320x240) [2.9 MB] || a001089.mpg (352x240) [7.1 MB] || ",
"hits": 22
},
{
"id": 1601,
"url": "https://svs.gsfc.nasa.gov/1601/",
"result_type": "Visualization",
"release_date": "1990-07-10T12:00:00-04:00",
"title": "Supporting Media for MOLA release",
"description": "How the spacecraft made the gravity map. Animation by Studio 13. || gravmapping_pre.jpg (320x240) [10.3 KB] || preview_made_from_dv.00070_print.png (320x240) [28.9 KB] || gravmapping.webmhd.webm (960x540) [567.8 KB] || gravmapping.mov (320x240) [1.7 MB] || ",
"hits": 19
}
]
}