{ "count": 85, "next": null, "previous": null, "results": [ { "id": 5587, "url": "https://svs.gsfc.nasa.gov/5587/", "result_type": "Visualization", "release_date": "2025-12-11T12:00:00-05:00", "title": "Moon Phase and Libration, 2026", "description": "The animation archived on this page shows the geocentric phase, libration, position angle of the axis, and apparent diameter of the Moon throughout the year 2026, at hourly intervals.", "hits": 5063 }, { "id": 5588, "url": "https://svs.gsfc.nasa.gov/5588/", "result_type": "Visualization", "release_date": "2025-12-11T12:00:00-05:00", "title": "Moon Phase and Libration, 2026 South Up", "description": "The animation archived on this page shows the geocentric phase, libration, position angle of the axis, and apparent diameter of the Moon throughout the year 2026, at hourly intervals.", "hits": 575 }, { "id": 5415, "url": "https://svs.gsfc.nasa.gov/5415/", "result_type": "Visualization", "release_date": "2024-11-22T09:00:00-05:00", "title": "Moon Phase and Libration, 2025", "description": "The geocentric phase, libration, position angle of the axis, and apparent diameter of the Moon throughout the year 2025, at hourly intervals.", "hits": 2935 }, { "id": 5416, "url": "https://svs.gsfc.nasa.gov/5416/", "result_type": "Visualization", "release_date": "2024-11-22T09:00:00-05:00", "title": "Moon Phase and Libration, 2025 South Up", "description": " || The data in the table for all of 2025 can be downloaded as a JSON file or as a text file. || ", "hits": 490 }, { "id": 5187, "url": "https://svs.gsfc.nasa.gov/5187/", "result_type": "Visualization", "release_date": "2023-11-16T08:00:00-05:00", "title": "Moon Phase and Libration, 2024", "description": " || The data in the table for all of 2024 can be downloaded as a JSON file or as a text file. || moon.0001.jpg (730x730) [87.6 KB] || comp.0001.tif (5760x3240) [14.8 MB] || ", "hits": 1068 }, { "id": 5188, "url": "https://svs.gsfc.nasa.gov/5188/", "result_type": "Visualization", "release_date": "2023-11-16T08:00:00-05:00", "title": "Moon Phase and Libration, 2024 South Up", "description": " || The data in the table for all of 2024 can be downloaded as a JSON file or as a text file. || moon.0001.jpg (730x730) [87.3 KB] || comp.0001.tif (5760x3240) [15.0 MB] || ", "hits": 201 }, { "id": 5048, "url": "https://svs.gsfc.nasa.gov/5048/", "result_type": "Visualization", "release_date": "2022-11-09T13:00:00-05:00", "title": "Moon Phase and Libration, 2023", "description": "Dial-A-Moon || moon.0001.jpg (730x730) || comp.0001.tif (5760x3240) || || ", "hits": 746 }, { "id": 5049, "url": "https://svs.gsfc.nasa.gov/5049/", "result_type": "Visualization", "release_date": "2022-11-09T13:00:00-05:00", "title": "Moon Phase and Libration, 2023 South Up", "description": "Dial-A-Moon || moon.0001.jpg (730x730) || comp.0001.tif (5760x3240) || || ", "hits": 121 }, { "id": 4955, "url": "https://svs.gsfc.nasa.gov/4955/", "result_type": "Visualization", "release_date": "2021-11-18T10:00:00-05:00", "title": "Moon Phase and Libration, 2022", "description": "Dial-A-Moon || moon.0001.jpg (730x730) || comp.0001.tif (5760x3240) || || ", "hits": 939 }, { "id": 4956, "url": "https://svs.gsfc.nasa.gov/4956/", "result_type": "Visualization", "release_date": "2021-11-18T09:59:00-05:00", "title": "Moon Phase and Libration, 2022 South Up", "description": "Dial-A-Moon || moon.0001.jpg (730x730) || comp.0001.tif (5760x3240) || || ", "hits": 351 }, { "id": 4874, "url": "https://svs.gsfc.nasa.gov/4874/", "result_type": "Visualization", "release_date": "2020-11-23T00:00:00-05:00", "title": "Moon Phase and Libration, 2021", "description": "Dial-A-Moon || moon.0001.jpg (730x730) || comp.0001.tif (5760x3240) || || ", "hits": 1122 }, { "id": 4875, "url": "https://svs.gsfc.nasa.gov/4875/", "result_type": "Visualization", "release_date": "2020-11-23T00:00:00-05:00", "title": "Moon Phase and Libration, 2021 South Up", "description": "Dial-A-Moon || moon.0001.jpg (730x730) || comp.0001.tif (5760x3240) || || ", "hits": 135 }, { "id": 4768, "url": "https://svs.gsfc.nasa.gov/4768/", "result_type": "Visualization", "release_date": "2019-12-12T12:00:00-05:00", "title": "Moon Phase and Libration, 2020", "description": "Dial-A-Moon || moon.0001.jpg (730x730) || comp.0001.tif (5760x3240) || || ", "hits": 890 }, { "id": 4769, "url": "https://svs.gsfc.nasa.gov/4769/", "result_type": "Visualization", "release_date": "2019-12-12T12:00:00-05:00", "title": "Moon Phase and Libration, 2020 South Up", "description": "Dial-A-Moon || moon.0001.jpg (730x730) || comp.0001.tif (5760x3240) || || ", "hits": 104 }, { "id": 4720, "url": "https://svs.gsfc.nasa.gov/4720/", "result_type": "Visualization", "release_date": "2019-09-06T10:00:00-04:00", "title": "CGI Moon Kit", "description": "These color and elevation maps are designed for use in 3D rendering software. They are created from data assembled by the Lunar Reconnaissance Orbiter camera and laser altimeter instrument teams.", "hits": 6481 }, { "id": 4593, "url": "https://svs.gsfc.nasa.gov/4593/", "result_type": "Visualization", "release_date": "2018-12-21T09:00:00-05:00", "title": "Earthrise in 4K", "description": "On December 24, 1968, Apollo 8 astronauts Frank Borman, Jim Lovell, and Bill Anders became the first humans to witness the Earth rising above the moon's barren surface. Now we can relive the astronauts' experience, thanks to data from NASA's Lunar Reconnaissance Orbiter. Complete transcript available.Watch this video on the NASA Goddard YouTube channel. || YOUTUBE_1080_G2018_Earthrise_Master_VX-300368_youtube_1080.mp4 (1920x1080) [882.1 MB] || earthrise_print.jpg (3840x2160) [515.7 KB] || earthrise_print_searchweb.png (180x320) [52.8 KB] || earthrise_print_thm.png (80x40) [4.6 KB] || TWITTER_720_G2018_Earthrise_Master_VX-300368_twitter_720.mp4 (1280x720) [114.9 MB] || FACEBOOK_720_G2018_Earthrise_Master_VX-300368_facebook_720.mp4 (1280x720) [641.1 MB] || YOUTUBE_720_G2018_Earthrise_Master_VX-300368_youtube_720.mp4 (1280x720) [832.1 MB] || G2018_Earthrise_Master_Output.en_US.srt [6.8 KB] || G2018_Earthrise_Master_Output.en_US.vtt [6.7 KB] || G2018_Earthrise_Master.webm (3840x2160) [107.0 MB] || G2018_Earthrise_Master.mp4 (3840x2160) [500.2 MB] || G2018_Earthrise_Master.mov (3840x2160) [19.6 GB] || G2018_Earthrise_Master.mp4.hwshow [82 bytes] || ", "hits": 816 }, { "id": 4442, "url": "https://svs.gsfc.nasa.gov/4442/", "result_type": "Visualization", "release_date": "2018-12-15T00:01:00-05:00", "title": "Moon Phase and Libration, 2019", "description": " || Click on the image to download a high-resolution version with labels for craters near the terminator.The data in the table for the entire year can be downloaded as a JSON file or as a text file. || moon.0001.jpg (730x730) [41.9 KB] || comp.0001.tif (3840x2160) [5.6 MB] || ", "hits": 272 }, { "id": 4459, "url": "https://svs.gsfc.nasa.gov/4459/", "result_type": "Visualization", "release_date": "2018-12-15T00:01:00-05:00", "title": "Moon Phase and Libration, 2019 South Up", "description": "Dial-A-Moon || moon.0001.jpg (730x730) || comp.0001.tif (5760x3240) || || ", "hits": 113 }, { "id": 13062, "url": "https://svs.gsfc.nasa.gov/13062/", "result_type": "Produced Video", "release_date": "2018-09-10T10:00:00-04:00", "title": "ICESat-2 Por Los Números (en Español)", "description": "ICESat-2 es un láser espacial de gran precisión que integra la tecnología más puntera de la NASA. Para poder medir la altura del hielo del planeta, los ingenieros deben llevar el instrumento ATLAS de ICESat-2 al extremo: a veces yendo a lo grande, otras a lo pequeño, pero siempre manteniéndolo preciso.ICESat-2 is an incredibly precise space laser that features the latest in NASA technology. To measure ice heights, engineers have to take ICESat-2’s instrument ATLAS to the extreme – sometimes going big, sometimes going small, but always keeping it precise.Click here for English-language versions. || ", "hits": 29 }, { "id": 13065, "url": "https://svs.gsfc.nasa.gov/13065/", "result_type": "Produced Video", "release_date": "2018-09-06T11:00:00-04:00", "title": "Countdown to ICESat-2 Launch", "description": "\"Stars Align,\" Andrew Michael Britton, Atmosphere Music Ltd.; \"A New Hope,\" Al Lethbridge, Atmosphere Music Ltd.Complete transcript available. || countdown_Thumb_print.jpg (1024x577) [75.2 KB] || countdown_Thumb_searchweb.png (320x180) [76.0 KB] || countdown_Thumb_thm.png (80x40) [6.3 KB] || 13065_Countdown_prores.mov (1920x1080) [2.4 GB] || 13065_Countdown_facebook_720.mp4 (1280x720) [228.5 MB] || 13065_Countdown_twitter_720.mp4 (1280x720) [40.0 MB] || 13065_Countdown_youtube_1080.mp4 (1920x1080) [314.1 MB] || 13065_Countdown.webm (960x540) [73.1 MB] || 13065_Countdown.en_US.srt [3.7 KB] || 13065_Countdown.en_US.vtt [3.7 KB] || ", "hits": 20 }, { "id": 13049, "url": "https://svs.gsfc.nasa.gov/13049/", "result_type": "Produced Video", "release_date": "2018-08-22T10:00:00-04:00", "title": "ICESat-2 Measures Sea Ice Thickness", "description": "Animation showing how ICESat-2 will measure the height of sea ice freeboard (hf) – the portion of sea ice floating above the water – to estimate sea ice thickness (hi). || freeboard_thumb_print.jpg (1024x582) [32.0 KB] || freeboard_thumb_searchweb.png (320x180) [40.1 KB] || freeboard_thumb_thm.png (80x40) [3.5 KB] || SEA_ICE_V06.webm (1920x1080) [5.5 MB] || SEA_ICE_V06_facebook_720.mp4 (1280x720) [70.8 MB] || SEA_ICE_V06_youtube_1080.mp4 (1920x1080) [93.8 MB] || 1920x1080_16x9_60p (1920x1080) [0 Item(s)] || GSFC_20180822_ICESat2_m13049_SEAICE.en_US.vtt [64 bytes] || SEA_ICE_V06_prores.mov (1920x1080) [2.5 GB] || ", "hits": 73 }, { "id": 4675, "url": "https://svs.gsfc.nasa.gov/4675/", "result_type": "Visualization", "release_date": "2018-07-31T09:00:00-04:00", "title": "Moon Phases for Spherical Displays", "description": "A looping animation showing a complete cycle of lunar phases (lunar day and night) designed for spherical displays. || phases.0001_print.jpg (1024x512) [106.9 KB] || phases.0001_searchweb.png (320x180) [64.4 KB] || phases.0001_thm.png (80x40) [4.3 KB] || sos_phases_1024p30.mp4 (2048x1024) [18.8 MB] || sos_phases_2048p30.mp4 (4096x2048) [54.9 MB] || sos_phases_512p30.mp4 (1024x512) [5.2 MB] || 4096x2048_2x1_30p (4096x2048) [32.0 KB] || sos_phases_512p30.webm (1024x512) [2.2 MB] || ", "hits": 321 }, { "id": 4655, "url": "https://svs.gsfc.nasa.gov/4655/", "result_type": "Visualization", "release_date": "2018-07-20T08:45:00-04:00", "title": "Moonlight (Clair de Lune)", "description": "Set to Claude Debussy's Clair de Lune, this visualization uses Lunar Reconnaissance Orbiter data to show the stark beauty of evolving light and shadow near sunrise and sunset on the rugged lunar surface. Music performed by Timothy Michael Hammond, distributed by Killer Tracks.This video is also on the NASA Goddard YouTube channel at both 720p (HD) and 2160p (UHD or 4K). || moonlight_prores.00210_print.jpg (1024x576) [25.1 KB] || moonlight_prores.00210_searchweb.png (320x180) [9.8 KB] || moonlight_prores.00210_thm.png (80x40) [970 bytes] || moonlight_720p30.webm (1280x720) [34.3 MB] || moonlight_1080p30.mp4 (1920x1080) [312.4 MB] || moonlight_720p30.mp4 (1280x720) [319.9 MB] || moonlight_360p30.mp4 (640x360) [94.6 MB] || moonlight_2160p30.mp4 (3840x2160) [341.2 MB] || moonlight_1080p30_prores.mov (1920x1080) [4.2 GB] || moonlight_2160p30_prores.mov (3840x2160) [15.8 GB] || moonlight_2160p30.hwshow || moonlight_1080p30.hwshow || ", "hits": 185 }, { "id": 4619, "url": "https://svs.gsfc.nasa.gov/4619/", "result_type": "Visualization", "release_date": "2018-04-09T10:00:00-04:00", "title": "Tour of the Moon 4K Redux", "description": "The camera flies over the lunar terrain, coming in for close looks at a variety of interesting sites and some of the LRO data associated with them. Includes narration, music, feature titles, research sources, and the location and scale of the image center. Music Provided By Killer Tracks: \"Never Looking Back\" - Frederick Wiedmann. \"Flying over Turmoil\" - Benjamin Krause & Scott Goodman.Watch this video on the NASA Goddard YouTube channel.This video is also available on the SVS YouTube channel. || narrated.1000_print.jpg (1024x576) [197.1 KB] || moontour_narrated_1080p30.webm (1920x1080) [40.4 MB] || moontour_narrated_1080p30.mp4 (1920x1080) [458.9 MB] || moontour_narrated.en_US.srt [5.9 KB] || moontour_narrated.en_US.vtt [5.9 KB] || moontour_narrated_2160p30.mp4 (3840x2160) [1.4 GB] || moontour_narrated_2160p30_prores.mov (3840x2160) [18.1 GB] || ", "hits": 395 }, { "id": 4604, "url": "https://svs.gsfc.nasa.gov/4604/", "result_type": "Visualization", "release_date": "2017-12-18T01:00:00-05:00", "title": "Moon Phase and Libration, 2018", "description": " || Dial-A-Moon || moon.0001.jpg (730x730) || comp.0001.tif (5760x3240) || ", "hits": 302 }, { "id": 4605, "url": "https://svs.gsfc.nasa.gov/4605/", "result_type": "Visualization", "release_date": "2017-12-18T01:00:00-05:00", "title": "Moon Phase and Libration, 2018 South Up", "description": " || Dial-A-Moon || moon.0001.jpg (730x730) || comp.0001.tif (5760x3240) || ", "hits": 90 }, { "id": 12768, "url": "https://svs.gsfc.nasa.gov/12768/", "result_type": "Produced Video", "release_date": "2017-11-03T00:00:00-04:00", "title": "ICESat-2 By the Numbers", "description": "ICESat-2 is an incredibly precise space laser that features the latest in NASA technology To measure ice heights, engineers have to take ICESat-2’s instrument ATLAS to the extreme – sometimes going big, sometimes going small, but always keeping it precise. || ", "hits": 61 }, { "id": 4574, "url": "https://svs.gsfc.nasa.gov/4574/", "result_type": "Visualization", "release_date": "2017-05-31T10:00:00-04:00", "title": "Temperature, Reflectance Point to Frost near the Moon's Poles", "description": "A view of the south pole of the Moon showing where reflectance and temperature data indicate the possible presence of surface water ice. Includes music and narration. Music by Killer Tracks: Full Charge - Zubin Thakkar. || 4574_LROMoonFrost_YouTube.00780_print.jpg (1024x576) [236.8 KB] || 4574_LROMoonFrost_YouTube.mp4 (1920x1080) [75.8 MB] || 4574_LROMoonFrost_Facebook.mp4 (1280x720) [65.4 MB] || 4574_LROMoonFrost_Twitter.mp4 (1280x720) [11.8 MB] || 4574_LROMoonFrost_Facebook.webm (1280x720) [5.2 MB] || 4574_LROMoonFrost_MASTER.mov (1920x1080) [639.4 MB] || 4574_LroMoonFrost_Captions.en_US.srt [761 bytes] || 4574_LroMoonFrost_Captions.en_US.vtt [774 bytes] || 4574_LROMoonFrost_YouTube.mp4.hwshow [191 bytes] || ", "hits": 223 }, { "id": 12525, "url": "https://svs.gsfc.nasa.gov/12525/", "result_type": "Produced Video", "release_date": "2017-03-03T13:00:00-05:00", "title": "Photon Jump", "description": "Pho, a plucky bright green photon of light, must travel from a NASA spacecraft down to Earth and back again to help complete a crucial science mission in this educational short film. The animation was created and produced by media art students from the Savannah College of Art in Design (SCAD) in Georgia, in collaboration with NASA’s Ice, Cloud and Land Elevation Satellite-2 (ICESat-2) mission. Their goal was to communicate the science and engineering of the mission, slated for launch in 2018. ICESat-2, managed by NASA Goddard in Greenbelt, Maryland, will measure the height of a changing Earth, one laser pulse at a time, 10,000 laser pulses a second. ICESat-2 will carry a photon-counting laser altimeter that will allow scientists to measure the elevation of ice sheets, glaciers, sea ice and more - all in unprecedented detail. The workings of this laser helped inspire students to create the character of Pho and plot his adventure. Our planet's frozen and icy areas, called the cryosphere, are a key focus of NASA's Earth science research. ICESat-2 will help scientists investigate why, and how much, our cryosphere is changing in a warming climate. The satellite will also measure heights across Earth's temperate and tropical regions, and take stock of the vegetation in forests worldwide. For more about the mission, visit https://icesat-2.gsfc.nasa.gov. || ", "hits": 41 }, { "id": 4537, "url": "https://svs.gsfc.nasa.gov/4537/", "result_type": "Visualization", "release_date": "2016-12-22T15:00:00-05:00", "title": "Moon Phase and Libration, 2017", "description": " || Dial-A-Moon || moon.0001.jpg (730x730) || comp.0001.tif (5760x3240) || ", "hits": 250 }, { "id": 4538, "url": "https://svs.gsfc.nasa.gov/4538/", "result_type": "Visualization", "release_date": "2016-12-22T15:00:00-05:00", "title": "Moon Phase and Libration, 2017 South Up", "description": " || Dial-A-Moon || moon.0001.jpg (730x730) || comp.0001.tif (5760x3240) || ", "hits": 84 }, { "id": 4492, "url": "https://svs.gsfc.nasa.gov/4492/", "result_type": "Visualization", "release_date": "2016-11-09T15:00:00-05:00", "title": "ICESat-2 Measurements Over Antarctica (prelaunch)", "description": "ICESat-2 has 3 pairs of lasers that will measure the heights of ice and snow at very high resolution || walls75.1870_print.jpg (1024x576) [34.7 KB] || walls75.1870_searchweb.png (320x180) [29.8 KB] || walls75.1870_thm.png (80x40) [3.4 KB] || walls_1080p30.mp4 (1920x1080) [50.0 MB] || 1920x1080_16x9_30p (1920x1080) [0 Item(s)] || walls_1080p30.webm (1920x1080) [11.9 MB] || walls_360p30.mp4 (640x360) [8.1 MB] || Slide1.hwshow || ", "hits": 136 }, { "id": 4444, "url": "https://svs.gsfc.nasa.gov/4444/", "result_type": "Visualization", "release_date": "2016-08-01T09:00:00-04:00", "title": "Rima Prinz and Vera", "description": "The camera zooms from an overhead, global view centered on the northern rim of Prinz crater, at 26.3°N 43.7°W, down to an oblique, close-up view of Vera crater and the associated rille, Rima Prinz. Narrated by NASA Goddard planetary geologist Debra Hurwitz Needham. || RimaPrinzVera_MASTER.00540_print.jpg (1024x576) [68.7 KB] || RimaPrinzVera_MASTER_appletv.m4v (1280x720) [17.0 MB] || RimaPrinzVera_MASTER_appletv_subtitles.m4v (1280x720) [17.0 MB] || RimaPrinzVera_MASTER.webm (1280x720) [3.5 MB] || RimaPrinzVera_MASTER_large.mp4 (3840x2160) [37.0 MB] || RimaPrinzVera_MASTER_ipod_sm.mp4 (320x240) [6.2 MB] || RimaPrinzVera_MASTER_youtube_hq.en_US.srt [747 bytes] || RimaPrinzVera_MASTER_youtube_hq.en_US.vtt [760 bytes] || RimaPrinzVera_MASTER.mpeg (1280x720) [122.3 MB] || RimaPrinzVera_MASTER_prores.mov (1280x720) [510.9 MB] || RimaPrinzVera_MASTER_youtube_hq.mov (3840x2160) [305.5 MB] || ", "hits": 56 }, { "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": 166 }, { "id": 12159, "url": "https://svs.gsfc.nasa.gov/12159/", "result_type": "Produced Video", "release_date": "2016-02-25T13:00:00-05:00", "title": "AfriSAR, an Introduction: The Carbon in the Trees", "description": "Complete transcript available. || AfriSAR_intro_final_print.jpg (1024x576) [234.8 KB] || AfriSAR_intro_final_searchweb.png (180x320) [136.6 KB] || AfriSAR_intro_final_web.png (320x180) [136.6 KB] || AfriSAR_intro_final_thm.png (80x40) [8.2 KB] || AfriSAR_intro_final.mp4 (1280x720) [250.4 MB] || AfriSAR_intro_final.webm (1280x720) [25.0 MB] || AfriSAR_Intro.en_US.srt [4.5 KB] || AfriSAR_Intro.en_US.vtt [4.5 KB] || ", "hits": 31 }, { "id": 12141, "url": "https://svs.gsfc.nasa.gov/12141/", "result_type": "Produced Video", "release_date": "2016-02-03T11:00:00-05:00", "title": "ICESat-2 Beam Pairs", "description": "Side view of the beam pairs. || ICESat-2_beams_side_print.jpg (1024x576) [121.7 KB] || ICESat-2_beams_side_searchweb.png (320x180) [92.0 KB] || ICESat-2_beams_side_thm.png (80x40) [6.9 KB] || ICESat-2_beams_side.mp4 (1920x1080) [19.9 MB] || ICESat-2_beams_side.webm (1920x1080) [1.6 MB] || sideview (1920x1080) [0 Item(s)] || ICESat-2_beams_side.mov (1920x1080) [221.5 MB] || ", "hits": 43 }, { "id": 4404, "url": "https://svs.gsfc.nasa.gov/4404/", "result_type": "Visualization", "release_date": "2015-12-10T12:00:00-05:00", "title": "Moon Phase and Libration, 2016", "description": " || Click on the image to download a high-resolution version with labels for craters near the terminator.The data in the table for the entire year can be downloaded as a JSON file or as a text file. || moon.0001.jpg (730x730) [74.4 KB] || comp.0001.tif (1920x1080) [2.5 MB] || ", "hits": 699 }, { "id": 4405, "url": "https://svs.gsfc.nasa.gov/4405/", "result_type": "Visualization", "release_date": "2015-12-10T12:00:00-05:00", "title": "Moon Phase and Libration, 2016 South Up", "description": " || Click on the image to download a high-resolution version with labels for craters near the terminator.The data in the table for the entire year can be downloaded as a JSON file or as a text file. || moon.0001.jpg (730x730) [74.4 KB] || comp.0001.tif (3840x2160) [7.1 MB] || ", "hits": 79 }, { "id": 12041, "url": "https://svs.gsfc.nasa.gov/12041/", "result_type": "Produced Video", "release_date": "2015-11-04T11:00:00-05:00", "title": "ICESat-2 Measures Slope", "description": "Animation with info key. || icesat_tracks_still.png (1919x1076) [2.8 MB] || icesat_tracks_still_print.jpg (1024x574) [146.6 KB] || icesat_tracks_still_searchweb.png (320x180) [102.8 KB] || icesat_tracks_still_web.png (320x179) [102.4 KB] || icesat_tracks_still_thm.png (80x40) [9.3 KB] || IceSatTracks.mp4 (1920x1080) [80.7 MB] || IceSatTracks.webm (1920x1080) [6.6 MB] || key (1920x1080) [0 Item(s)] || IceSatTracks.mov (1920x1080) [1.8 GB] || ", "hits": 47 }, { "id": 4349, "url": "https://svs.gsfc.nasa.gov/4349/", "result_type": "Visualization", "release_date": "2015-08-28T18:00:00-04:00", "title": "Supermoon Eclipse 2015", "description": "The geometry of the Moon's orbit in motion, from the end of August until the supermoon eclipse on September 27-28, 2015. The inner blue circle shows perigee distance, the outer blue circle shows apogee distance, and the off-center, light gray circle shows the Moon's orbit. Frame sequences with alpha channel are available for the separate elements of the animation.This video is also available on our YouTube channel. || moon.0600_print.jpg (1024x576) [68.6 KB] || moon.0600_searchweb.png (180x320) [35.4 KB] || moon.0600_thm.png (80x40) [4.8 KB] || supermoon_1080p30.mp4 (1920x1080) [4.1 MB] || supermoon_720p30.mp4 (1280x720) [2.4 MB] || fancy (1920x1080) [0 Item(s)] || moon_earth (1920x1080) [0 Item(s)] || orbit (1920x1080) [0 Item(s)] || supermoon_720p30.webm (1280x720) [2.2 MB] || supermoon_360p30.mp4 (640x360) [1.0 MB] || 320x320_1x1_30p (320x320) [0 Item(s)] || 360x230_36x23_30p (360x230) [0 Item(s)] || ", "hits": 146 }, { "id": 4310, "url": "https://svs.gsfc.nasa.gov/4310/", "result_type": "Visualization", "release_date": "2015-05-01T00:00:00-04:00", "title": "Moon Phases Loop", "description": "A looping animation showing a complete cycle of average lunar phases. || moon.0060_print.jpg (1024x576) [57.1 KB] || moon.0060_searchweb.png (320x180) [33.1 KB] || moon.0060_thm.png (80x40) [3.1 KB] || moon_720p30.mp4 (1280x720) [1.5 MB] || moon_1080p30.mp4 (1920x1080) [3.4 MB] || 1920x1080_16x9_30p (1920x1080) [16.0 KB] || moon_720p30.webm (1280x720) [873.0 KB] || moon_2160p30.mp4 (3840x2160) [11.6 MB] || moon_360p30.mp4 (640x360) [401.5 KB] || 5760x3240_16x9_30p (5760x3240) [16.0 KB] || moon_1080p30_4310.pptx [3.9 MB] || moon_1080p30_4310.key [6.3 MB] || ", "hits": 1302 }, { "id": 4253, "url": "https://svs.gsfc.nasa.gov/4253/", "result_type": "Visualization", "release_date": "2015-02-04T09:00:00-05:00", "title": "Moon Phase and Libration, from the Other Side", "description": "This narrated video introduces two views of the Moon's far side. Transcript.This video is also available on our YouTube channel. || opposite.0820_print.jpg (1024x576) [158.8 KB] || opposite.0820_thm.png (80x40) [5.8 KB] || G2015-013_ViewfromOtherSide_MASTER_youtube_hq.mov (1280x720) [75.4 MB] || G2015-013_ViewfromOtherSide_MASTER_1280x720.wmv (1280x720) [50.7 MB] || G2015-013_ViewfromOtherSide_MASTER_appletv.m4v (960x540) [43.3 MB] || G2015-013_ViewfromOtherSide_MASTER_appletv.webm (960x540) [13.8 MB] || G2015-013_ViewfromOtherSide_MASTER_appletv_subtitles.m4v (960x540) [43.2 MB] || G2015-013_ViewfromOtherSide_MASTER_nasaportal.mov (640x360) [34.9 MB] || G2015-013_ViewfromOtherSide_MASTER_ipod_lg.m4v (640x360) [19.0 MB] || G2015-013_ViewfromOtherSide.en_US.srt [2.0 KB] || G2015-013_ViewfromOtherSide.en_US.vtt [2.0 KB] || G2015-013_ViewfromOtherSide_MASTER_prores.mov (1280x720) [1.5 GB] || G2015-013_ViewfromOtherSide_MASTER_ipod_sm.mp4 (320x240) [9.0 MB] || ", "hits": 240 }, { "id": 11726, "url": "https://svs.gsfc.nasa.gov/11726/", "result_type": "Produced Video", "release_date": "2015-01-07T11:00:00-05:00", "title": "ATLAS: Laser Focus", "description": "Laser Focus: TimingDeputy Systems Engineer Phil Luers explains how the ATLAS transmitter and receiver subsystems come together to calculate the timing of photons, which, in turn, measure the elevation of ice.Complete transcript available.Music: \"Electric Works\" by Philippe Lhommet, Koka Media; \"From Source to Sea\" by Christophe Lebled, Pierre Jacquot, Koka Media. || Timing_still_print.jpg (1024x575) [52.8 KB] || Timing_still_searchweb.png (180x320) [51.0 KB] || Timing_still_thm.png (80x40) [4.1 KB] || 11726_Timing_prores.webm (1920x1080) [26.0 MB] || 11726_Timing_prores_appletv.m4v (1280x720) [111.3 MB] || 11726_Timing_prores_appletv_subtitles.m4v (1280x720) [111.4 MB] || 11726_Timing_h264.mp4 (1920x1080) [231.3 MB] || YOUTUBE_1080_11726_Timing_prores_youtube_1080.mp4 (1920x1080) [369.1 MB] || 11726_Timing_prores_youtube_hq.mov (1920x1080) [870.9 MB] || Timing.en_US.srt [4.3 KB] || Timing.en_US.vtt [4.3 KB] || 11726_Timing_prores.mov (1920x1080) [5.9 GB] || 11726_Timing.hwshow [64 bytes] || ", "hits": 51 }, { "id": 4236, "url": "https://svs.gsfc.nasa.gov/4236/", "result_type": "Visualization", "release_date": "2014-12-09T06:00:00-05:00", "title": "Moon Phase and Libration, 2015", "description": " || New: Click on the image to download a high-resolution version with labels for craters near the terminator. The data in the table for the entire year can be downloaded as a JSON file or as a text file. || moon.0001.jpg (730x730) [92.5 KB] || comp.0001.tif (1920x1080) [2.5 MB] || ", "hits": 123 }, { "id": 4237, "url": "https://svs.gsfc.nasa.gov/4237/", "result_type": "Visualization", "release_date": "2014-12-09T06:00:00-05:00", "title": "Moon Phase and Libration, 2015 South Up", "description": " || New: Click on the image to download a high-resolution version with labels for craters near the terminator. The data in the table for the entire year can be downloaded as a JSON file or as a text file. || moon.0001.jpg (730x730) [92.6 KB] || comp.0001.tif (1920x1080) [2.5 MB] || ", "hits": 86 }, { "id": 4193, "url": "https://svs.gsfc.nasa.gov/4193/", "result_type": "Visualization", "release_date": "2014-08-08T09:00:00-04:00", "title": "Supermoon 2014", "description": "On August 10, 2014, the Moon will be full at the same time that it is closest to Earth for the year. This coincidence is sometimes called a supermoon.The Moon's orbit is very slightly elliptical and therefore somewhat off-center relative to the Earth. Each month, the Moon passes through points in its orbit called perigee and apogee, the closest and farthest points from the Earth for that month. Some perigees are a little closer than others. The closest perigee for 2014 occurs on August 10 at around 17:49 Universal Time, when the Moon will be 356,896 kilometers (221,765 miles) away. As it happens, this is only a few minutes before the time of peak full Moon at 18:10 UT, when the Moon's ecliptic longitude differs from the Sun's by exactly 180 degrees.How often does this happen? The period between perigees, called the anomalistic month, is 27.55 days, on average, while the time between Full Moons, called the synodic month, is 29.53 days. These two periods sync up every 413 days, or 1.13 years. 15 anomalistic months are about as long as 14 synodic months, so that's how often the pattern repeats.Recently, a much broader definition of \"supermoon\" has taken hold. It includes both Full and New Moons, and perigee merely needs to be \"close enough,\" generally within a couple of days. By this definition, there are six or seven supermoons every year, half of which can't be observed. Not so super!The actual shape of the Moon's orbit is another source of confusion. The orbit is often depicted as an almost cigar-shaped ellipse, but this is a misleading exaggeration. If you were to draw the orbit on a sheet of paper, its deviation from a perfect circle would be less than the thickness of your pencil point. The 50,000 kilometer (30,000 mile) difference between perigee and apogee is almost entirely due to the orbit being off-center. The difference between the semimajor and semiminor axes is less than 1000 kilometers (600 miles).The animation begins in mid-July, showing that perigee and Full Moon miss each other by about a day. It then shows apogee on July 28, when the Moon is almost 32 Earth diameters away. It ends on August 10, the day of the supermoon, when the distance to the Moon is 28 Earth diameters. The Moon graphic in the upper left shows the change in the Moon's apparent size as it moves closer and farther in its orbit. (The relative sizes of the Earth and Moon in the main orbit graphic are exaggerated by a factor of 15 to make them more easily visible.) || ", "hits": 135 }, { "id": 4185, "url": "https://svs.gsfc.nasa.gov/4185/", "result_type": "Visualization", "release_date": "2014-07-18T09:00:00-04:00", "title": "A New Look at the Apollo 11 Landing Site", "description": "Apollo 11 landed on the Moon on July 20th, 1969, a little after 4:00 in the afternoon Eastern Daylight Time. The Lunar Module, nicknamed Eagle and flown by Neil Armstrong and Edwin \"Buzz\" Aldrin, touched down near the southern rim of the Sea of Tranquility, one of the large, dark basins that contribute to the Man in the Moon visible from Earth. Armstrong and Aldrin spent about two hours outside the LM setting up experiments and collecting samples. At one point, Armstrong ventured east of the LM to examine a small crater, dubbed Little West, that he'd flown over just before landing.The trails of disturbed regolith created by the astronauts' boots are still clearly visible in photographs of the landing site taken by the Lunar Reconnaissance Orbiter (LRO) narrow-angle camera (LROC) more than four decades later.LROC imagery makes it possible to visit the landing site in a whole new way by flying around a three-dimensional model of the site. LROC scientists created the digital elevation model using a stereo pair of images. Each image in the pair shows the site from a slightly different angle, allowing sophisticated software to infer the shape of the terrain, similar to the way that left and right eye views are combined in the brain to produce the perception of depth.The animator draped an LROC photograph over the terrain model. He also added a 3D model of the LM descent stage—the real LM in the photograph looks oddly flat when viewed at an oblique angle.Although the area around the site is relatively flat by lunar standards, West Crater (the big brother of the crater visited by Armstrong) appears in dramatic relief near the eastern edge of the terrain model. Ejecta from West comprises the boulders that Armstrong had to avoid as he searched for a safe landing site.Apollo 11 was the first of six increasingly ambitious crewed lunar landings. The exploration of the lunar surface by the Apollo astronauts, when combined with the wealth of remote sensing data now being returned by LRO, continues to inform our understanding of our nearest neighbor in space. || ", "hits": 876 }, { "id": 11555, "url": "https://svs.gsfc.nasa.gov/11555/", "result_type": "Produced Video", "release_date": "2014-06-09T06:00:00-04:00", "title": "Laser Mapping The Earth", "description": "NASA scientist Bryan Blair introduces a laser mapping sensor known as LVIS (the Land, Vegetation, and Ice Sensor), which is flown by aircraft over target areas to collect data on surface topography and vegetation cover. Bryan also discusses the benefits to mounting LVIS onto high-altitude, long-duration aircraft such as the Global Hawk. || ", "hits": 14 }, { "id": 4129, "url": "https://svs.gsfc.nasa.gov/4129/", "result_type": "Visualization", "release_date": "2013-12-20T10:00:00-05:00", "title": "Earthrise: The 45th Anniversary", "description": "In December of 1968, the crew of Apollo 8 became the first people to leave our home planet and travel to another body in space. But as crew members Frank Borman, James Lovell, and William Anders all later recalled, the most important thing they discovered was Earth.Using photo mosaics and elevation data from Lunar Reconnaissance Orbiter (LRO), this video commemorates the 45th anniversary of Apollo 8's historic flight by recreating the moment when the crew first saw and photographed the Earth rising from behind the Moon. Narrator Andrew Chaikin, author of A Man on the Moon, sets the scene for a three-minute visualization of the view from both inside and outside the spacecraft accompanied by the onboard audio of the astronauts.The visualization draws on numerous historical sources, including the actual cloud pattern on Earth from the ESSA-7 satellite and dozens of photographs taken by Apollo 8, and it reveals new, historically significant information about the Earthrise photographs. It has not been widely known, for example, that the spacecraft was rolling when the photos were taken, and that it was this roll that brought the Earth into view. The visualization establishes the precise timing of the roll and, for the first time ever, identifies which window each photograph was taken from.The key to the new work is a set of vertical stereo photographs taken by a camera mounted in the Command Module's rendezvous window and pointing straight down onto the lunar surface. It automatically photographed the surface every 20 seconds. By registering each photograph to a model of the terrain based on LRO data, the orientation of the spacecraft can be precisely determined.Andrew Chaikin's article Who Took the Legendary Earthrise Photo From Apollo 8? appeared in the January, 2018 issue of Smithsonian magazine. It includes the story of the making of this visualization.A Google Hangout discussion of this visualization between Ernie Wright (creator of the visualization), Andrew Chaikin, John Keller (LRO project scientist), and Aries Keck (NASA media specialist) was held on December 20, 2013. A replay of that hangout is available here.Ernie Wright presented a talk about the making of this animation at the 2014 SIGGRAPH Conference in Vancouver. He also wrote a NASA Wavelength blog entry about Earthrise that includes links to educator resources related to LRO. || ", "hits": 599 }, { "id": 4118, "url": "https://svs.gsfc.nasa.gov/4118/", "result_type": "Visualization", "release_date": "2013-12-06T00:01:00-05:00", "title": "Moon Phase and Libration, 2014", "description": " || The data in the table for the entire year can be downloaded as a JSON file or as a text file. || moon.0001.jpg (730x730) [27.9 KB] || comp.0001.tif (1920x1080) [1.5 MB] || ", "hits": 116 }, { "id": 4119, "url": "https://svs.gsfc.nasa.gov/4119/", "result_type": "Visualization", "release_date": "2013-12-06T00:01:00-05:00", "title": "Moon Phase and Libration, 2014 South Up", "description": " || The data in the table for the entire year can be downloaded as a JSON file or as a text file. || moon.0001.jpg (730x730) [27.7 KB] || comp.0001.tif (1920x1080) [1.5 MB] || ", "hits": 65 }, { "id": 11389, "url": "https://svs.gsfc.nasa.gov/11389/", "result_type": "Produced Video", "release_date": "2013-10-31T10:00:00-04:00", "title": "A Laser Scientist Answers 5 Questions about LVIS", "description": "With winter closing in, a new NASA airborne campaign got under way October 31, 2013 in Greenland. For the first time, the Laser Vegetation Imaging Sensor, or LVIS, is flying aboard NASA's new C-130 aircraft to measure the island's ice following a summer's melt. This data will complement measurements the LVIS instrument has taken in previous springtime campaigns as a part of Operation IceBridge, a six-year multi-instrument survey over both Arctic and Antarctic ice. || ", "hits": 5 }, { "id": 4084, "url": "https://svs.gsfc.nasa.gov/4084/", "result_type": "Visualization", "release_date": "2013-06-21T01:00:00-04:00", "title": "Supermoon 2013", "description": "On June 23, 2013, the Moon will be full at the same time that it is closest to Earth for the year. This coincidence is sometimes called a supermoon.The Moon's orbit is slightly elliptical and therefore a little off-center relative to the Earth. Each month, the Moon passes through points in its orbit called perigee and apogee, the closest and farthest points from the Earth for that month. Some perigees are a little closer than others. The closest perigee for 2013 occurs on June 23 at around 11:18 Universal Time, when the Moon will be 356,991 kilometers (221,824 miles) away. As it happens, this is only a few minutes before the time of peak full Moon at 11:32 UT, when the Moon's ecliptic longitude differs from the Sun's by exactly 180 degrees.How often does this happen? The period between perigees, called the anomalistic month, is 27.55 days. The time between full Moons, called the synodic month, is 29.53 days. These two periods sync up every 413 days, or 1.13 years. 15 anomalistic months are about as long as 14 synodic months. So that's how often the pattern repeats.The animation begins in May, showing that perigee and full Moon miss each other by about a day. It then shows apogee on June 9, when the Moon is almost 32 Earth diameters away. It ends on June 23, the day of the supermoon, when the distance to the Moon is 28 Earth diameters. The Moon graphic in the upper left shows the change in the Moon's apparent size as it moves closer and farther in its orbit. (The relative sizes of the Earth and Moon in the main orbit graphic are exaggerated by a factor of 15 to make them more easily visible.)By another coincidence, the supermoon occurs just two days after the northern summer solstice, when the Sun reaches its highest point in the northern hemisphere sky. The second animation shows the relationship between the Sun and the Earth at both the summer and winter solstice. || ", "hits": 135 }, { "id": 4075, "url": "https://svs.gsfc.nasa.gov/4075/", "result_type": "Visualization", "release_date": "2013-06-12T10:00:00-04:00", "title": "Lunar Transit from Solar Dynamics Observatory (2010)", "description": "Just as we do on Earth, the Solar Dynamics Observatory satellite periodically crosses the Moon's shadow and experiences a solar eclipse. During the eclipse witnessed by SDO on October 7, 2010, the southern hemisphere of the Moon was silhouetted against the solar disk, revealing some especially prominent mountain peaks near the Moon's south pole. By using elevation data from Lunar Reconnaissance Orbiter to visualize the Moon from SDO's point of view, it's possible to identify these peaks. Although all of these are well-known features, all but one of them have no official names. The following list corresponds to the labels in the animation, from left to right.In his 1954 sketch of the lunar south pole, astronomer Ewen Whitaker labeled this feature \"M3.\" It's a mountain about halfway between the craters Cabeus and Drygalski, at 83.2°S 68°W.Whitaker's \"M1,\" a mountain on the northern rim of Cabeus, 83.4°S 33°W.A mountain on the southern rim of Malapert crater, about halfway between the centers of Malapert and Haworth. Whitaker labels this Malapert Alpha. It's also known as Mons Malapert or Malapert Peak. 85.8°S 0°E.Labeled Leibnitz Beta by Whitaker and now officially named Mons Mouton, this is part of the highlands adjacent to the northern rim of Nobile crater. 84°S 37°E. Part of the Leibnitz mountain range first identified by Johann Schröter in the late 1700s, unrelated to Leibnitz Crater on the lunar far side.A mountain near Amundsen crater, on the western (Earthward) rim of Hédervári crater, 82.2°S 75°E. Whitaker tentatively labels this Leibnitz Epsilon in his sketch.The Moon visualization uses the latest albedo and elevation maps from Lunar Reconnaissance Orbiter (LRO). || ", "hits": 103 }, { "id": 4067, "url": "https://svs.gsfc.nasa.gov/4067/", "result_type": "Visualization", "release_date": "2013-06-05T11:00:00-04:00", "title": "Moon Phase and Libration, 2013 South Up", "description": " || The data in the table for the entire year can be downloaded as a JSON file or as a text file. || moon.0002.jpg (730x730) [94.7 KB] || comp.0001.tif (1920x1080) [2.3 MB] || ", "hits": 249 }, { "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": 31 }, { "id": 4043, "url": "https://svs.gsfc.nasa.gov/4043/", "result_type": "Visualization", "release_date": "2013-03-06T11:00:00-05:00", "title": "LRO Peers into Permanent Shadows", "description": "The Moon's permanently shadowed regions, or PSRs, are places on the Moon that haven't seen the Sun in millions, or even billions, of years. The Earth's tilted axis allows sunlight to fall everywhere on its surface, even at the poles, for at least part of the year. But the Moon's tilt relative to the Sun is only 1.6°, not enough to get sunlight into some deep craters near the lunar north and south poles. PSRs are therefore some of the coldest, darkest places in the solar system.Because of that, PSRs are expected to be excellent traps for volatiles, chemicals that would normally vaporize and escape into space, and this includes water. Lunar Reconnaissance Orbiter (LRO) includes several instruments designed to peer into the PSR darkness and measure temperature, reflectivity, and neutron absorption, all of which are clues to what chemicals might be hiding there. This animation shows where the PSRs are and in what ways LRO can see inside them. || ", "hits": 411 }, { "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. || ", "hits": 114 }, { "id": 4000, "url": "https://svs.gsfc.nasa.gov/4000/", "result_type": "Visualization", "release_date": "2012-11-20T12:00:00-05:00", "title": "Moon Phase and Libration, 2013", "description": " || The data in the table for the entire year can be downloaded as a JSON file or as a text file. || moon.0002.jpg (730x730) [94.6 KB] || comp.0001.tif (1920x1080) [2.3 MB] || ", "hits": 297 }, { "id": 3959, "url": "https://svs.gsfc.nasa.gov/3959/", "result_type": "Visualization", "release_date": "2012-09-27T00:00:00-04:00", "title": "RXTE Views X-ray Pulsar Occulted by the Moon", "description": "On Oct. 13, 2010, NASA's Rossi X-ray Timing Explorer (RXTE), a satellite in low-Earth orbit, observed a bursting X-ray pulsar as it was eclipsed by the Moon. This provided scientists with an unusual opportunity to calculate the precise position of the pulsar by timing its disappearance and reappearance at the edge of the Moon's disk.The story began a few days earlier, on Oct. 10, when the European Space Agency's INTEGRAL satellite detected a transient X-ray source in the direction of Terzan 5, a globular star cluster about 25,000 light-years away toward the constellation Sagittarius. This was the start of an extradordinary series of outbursts that ended Nov. 19. The object, dubbed IGR J17480-2446, is classed as a low-mass X-ray binary system, where a neutron star orbits a star much like the Sun and draws a stream of matter from it. As only the second bright X-ray source to be found in Terzan 5, scientists shortened the name of the system to T5X2. As shown in this animation, ingress (the moment when the pulsar disappeared) occurred on the Moon's eastern limb just above the equator. Egress, 8 minutes 32 seconds later, was near the south pole on the western limb. The timing of ingress and egress depended delicately on the shape of the terrain. In other words, it mattered whether the pulsar passed behind a mountain or a valley. So the calculation relied on the detailed topography measured by both JAXA's Kaguya and NASA's Lunar Reconnaissance Orbiter.The animation faithfully reproduces the angle of the Sun, the position of RXTE, the position and orientation of the Moon as seen from the satellite, the Moon's topography, and the starry background. RXTE's position was derived from the Goddard Flight Dynamics Facility ephemeris for day 6129 of the satellite's orbit, while the Sun and Moon positions came from JPL's DE421 solar system ephemeris. All of the positions and the viewing direction were transformed into Moon body-fixed coordinates, so that in the animation software, the Moon remained stationary at the origin, while the camera moved and pointed appropriately. The Moon, the stars, the pulsar, and the clock were all rendered separately and layered together. || ", "hits": 927 }, { "id": 3949, "url": "https://svs.gsfc.nasa.gov/3949/", "result_type": "Visualization", "release_date": "2012-05-08T00:00:00-04:00", "title": "Earth's Radiation Belts (side view)", "description": "This is a simulation of the Earth's radiation belts. In this version, we've kept the belts full structure. There is also a cross-section view of the belts in Earth's Radiation Belts (cross-section).The Earth's magnetosphere is a very large magnetic structure around the Earth, which gets stretched into a large, teardrop-shaped configuration through its interaction with the solar wind. A number of the magnetic field lines, which they may originate on the Earth, do not connect back to the Earth, but connect into the magnetic field carried by the solar wind. However, near the Earth, the dipole component of the field is stronger than the solar wind field, and this allows all the magnetic field lines to connect back to the Earth, forming (approximately) the classic magnetic dipole configuration. In this region, lower energy electrons and ions, many from the Earth's ionosphere, can become trapped by the magnetic field to form the radiation belts.The radiation belt model is constructed from particle flux information from the SAMPEX mission, with the flux mapped to constant L-shells of the Earth's dipole magnetic field. The model is anchored to the Earth's geomagnetic field axis, which is not perfectly aligned with the Earth's rotation axis. This creates a small wobble of the radiation belts with time, which can be seen in this visualization.The data driving the radiation belt structure is time-shifted from the 2003 Halloween solar storms, a series of strong solar eruptions that began in late October 2003 and continued into the first week of November. During this time, the particle content of the belts change rapidly due to the variation in the energetic particle flux from the Sun buffeting the Earth's magnetosphere. || ", "hits": 20 }, { "id": 3936, "url": "https://svs.gsfc.nasa.gov/3936/", "result_type": "Visualization", "release_date": "2012-04-19T00:00:00-04:00", "title": "Earthrise", "description": "The famous color photograph known as Earthrise, as well as a black-and-white image taken a minute earlier, document the moment when Earth was seen for the first time by human eyes from behind the Moon. They were taken on December 24, 1968 by the crew of Apollo 8, the first humans to leave low Earth orbit.The sight of a small, intensely blue Earth rising above the barren, gray horizon of the Moon was one of the few things that NASA and the crew of Apollo 8 had not thoroughly planned and rehearsed beforehand. As historian Robert Poole noted, this lack of preparation meant that the sight of Earth came with the force of a revelation, not just for the astronauts but for everyone on the ground. We came all this way to explore the Moon, Apollo 8 astronaut Bill Anders said, and the most important thing is that we discovered the Earth.Using the latest elevation data from Lunar Reconnaissance Orbiter, this visualization attempts to recreate what the astronauts saw. The virtual camera of the rendering software is put in the position of the Apollo 8 spacecraft at the time of the photographs, as the spacecraft emerged from its fourth pass behind the Moon. It shows a two-minute interval centered on 16:39:06 UT (10:39 a.m. Houston time) on December 24, 1968. This is around the time of AOS (acquisition of signal), the moment when radio contact is re-established after being lost on the far side of the Moon.The position and motion of the spacecraft are based on a state vector, a set of (x, y, z) position and (vx, vy, vz) velocity values, published in NASA's Apollo 8 Mission Report about a year after the flight. The animator translated these values, given in Moon-centered inertial coordinates for Besselian year 1969.0, into a modern coordinate system, then calculated an orbit. The spacecraft was 110 km (68 miles, 60 nautical miles) above the surface of the Moon at 11.2°S 113.8°E when the Earthrise photograph was taken. || ", "hits": 421 }, { "id": 3917, "url": "https://svs.gsfc.nasa.gov/3917/", "result_type": "Visualization", "release_date": "2012-03-15T00:00:00-04:00", "title": "Hyperwall: Three Moon Sites", "description": "Using elevation data returned by Lunar Reconnaissance Orbiter (LRO), these hyperwall-resolution animations visit three prominent features on the Moon's near side. || ", "hits": 120 }, { "id": 3909, "url": "https://svs.gsfc.nasa.gov/3909/", "result_type": "Visualization", "release_date": "2012-03-14T11:00:00-04:00", "title": "Tour of the Moon: Additional Footage", "description": "This is additional footage produced for the narrated version of Tour of the Moon. It supplements the visualizations in entry 3874. || ", "hits": 140 }, { "id": 3894, "url": "https://svs.gsfc.nasa.gov/3894/", "result_type": "Visualization", "release_date": "2012-01-01T00:00:00-05:00", "title": "Moon Phase and Libration, 2012", "description": " || The data in the table for the entire year can be downloaded as a JSON file or as a text file. || moon.0001.jpg (730x730) [67.4 KB] || moon.0001.tif (1920x1080) [1.1 MB] || ", "hits": 423 }, { "id": 3874, "url": "https://svs.gsfc.nasa.gov/3874/", "result_type": "Visualization", "release_date": "2011-10-27T06:00:00-04:00", "title": "Tour of the Moon", "description": "Using elevation and image data returned by Lunar Reconnaissance Orbiter (LRO), this animation takes the viewer on a virtual tour of the Moon. The tour visits a number of interesting sites chosen to illustrate a wide variety of lunar terrain features. Some are on the near side and are familiar to both professional and amateur observers on Earth, while others can only be seen clearly from space. Some are large and old (Orientale, South Pole-Aitken), others are smaller and younger (Tycho, Aristarchus). Constantly shadowed areas near the poles are hard to photograph but easier to measure with altimetry, while several of the Apollo landing sites, all relatively near the equator, have been imaged at resolutions as high as 25 centimeters (10 inches) per pixel.The shape of the terrain in this animation is based primarily on data from LRO's laser altimeter (LOLA), supplemented by stereo image data from its wide angle camera (LROC WAC) and from Japan's Kaguya mission. The global surface color is from Clementine. || ", "hits": 348 }, { "id": 3866, "url": "https://svs.gsfc.nasa.gov/3866/", "result_type": "Visualization", "release_date": "2011-10-06T00:00:00-04:00", "title": "LOLA Footprints II", "description": "LOLA, the Lunar Orbiter Laser Altimeter aboard the Lunar Reconnaissance Orbiter spacecraft, is an instrument for measuring the altitude of the Moon's terrain. As LRO orbits the Moon, LOLA bounces laser light off the lunar surface 28 times per second. An array of five sensors arranged in an X-shape detects the reflected light. The amount of time it takes the light to travel to the surface and back to the sensors tells the instrument how far away the surface is. Over time, LOLA builds up a complete elevation map of the Moon.This animation illustrates how the X-shaped LOLA sensor footprint travels over the lunar surface. The LOLA data track is taken from LRO orbit number 1155, on September 27, 2009, as the spacecraft passed over Amundsen crater near the lunar south pole. It begins with a distant view showing the entire crater, then switches to a view near the surface that chases the laser pulses over the central peak and across the floor of this large crater. Through most of the movie, the laser pulses are shown racing across the surface at actual speed, but at one point, the pace is slowed so that the viewer can see the sensor pattern of each individual laser pulse.The imagery of the ground view is a high-resolution photograph taken by the LRO narrow-angle camera at the same time this LOLA data track was being recorded. The shape of the terrain in all of the views is taken from LOLA elevation maps. All of this data is publicly available from the Planetary Data System's LRO archive.This is a new and improved version of entry #3758. || ", "hits": 112 }, { "id": 3810, "url": "https://svs.gsfc.nasa.gov/3810/", "result_type": "Visualization", "release_date": "2011-06-13T09:00:00-04:00", "title": "Moon Phase and Libration, 2011", "description": " || The data in the table for the entire year can be downloaded as a JSON file or as a text file. || moon.0001.jpg (730x730) [36.2 KB] || moon.0001.tif (1920x1080) [852.2 KB] || ", "hits": 574 }, { "id": 10757, "url": "https://svs.gsfc.nasa.gov/10757/", "result_type": "Produced Video", "release_date": "2011-04-14T00:00:00-04:00", "title": "Intro to LIDAR 3D", "description": "Want to know the 3D shape of terrain on another planet? Want to study the height and density of Earth's forests? An amazing tool called LIDAR can help. Learn more in this video!This video is presented in stereoscopic 3D for those who can view it. We've included left and right eye clips, a side-by-side version, and an anaglyph (red/blue) version. Download any of them below! || ", "hits": 90 }, { "id": 3808, "url": "https://svs.gsfc.nasa.gov/3808/", "result_type": "Visualization", "release_date": "2010-12-17T00:00:00-05:00", "title": "LOLA Stills for AGU 2010", "description": "These high resolution still images illustrate the global elevation map of the Moon being developed by the laser altimeter (LOLA) on Lunar Reconnaissance Orbiter. To date, LOLA has measured the elevation of over two billion points on the surface of the Moon. These measurements make it possible to render shaded relief maps of the Moon with unprecedented accuracy and detail. See also this comparison of LOLA with past maps.The waning gibbous Moon is rendered from three points of view. For each view, a natural color image is paired with a false color version in which low elevations are blue to green and high elevations are yellow to red. The terrain is in highest relief near the terminator, or shadow line, where the Sun is setting on a month-long lunar day. Amateur astronomers pay particular attention to features near the terminator, since the high relief brings out details that are normally washed out in the glare of reflected sunlight. || ", "hits": 191 }, { "id": 10486, "url": "https://svs.gsfc.nasa.gov/10486/", "result_type": "Produced Video", "release_date": "2009-09-17T00:00:00-04:00", "title": "LOLA: Defining the Lunar Terrain", "description": "The Lunar Orbiter Laser Altimeter (LOLA) instrument on board NASA's LRO spacecraft will be responsible for building the highest detail topography currently available of the lunar terrain. In this video David Smith, LOLA's Principal Investigator, explains how this technology works.For complete transcript, click here. || LOLAvideo_ipod.00502_print.jpg (1024x576) [28.3 KB] || LOLAvideo_ipod_web.png (320x180) [41.6 KB] || LOLAvideo_ipod_thm.png (80x40) [4.4 KB] || LOLAvideo_appletv.webmhd.webm (960x540) [43.0 MB] || LOLAvideo_appletv.m4v (960x540) [99.2 MB] || LOLAvideo_youtube.mov (1280x720) [58.9 MB] || LOLAvideo_h264.mov (1280x720) [301.3 MB] || LOLAvideo_prores.mov (1280x720) [3.6 GB] || LOLAvideo_ipod.m4v (640x360) [45.4 MB] || LOLAvideo_ipodsm.m4v (320x180) [16.6 MB] || LOLAvideo_portal.wmv (320x236) [20.0 MB] || LOLAvideo_SVS.mpg (512x288) [35.2 MB] || ", "hits": 53 }, { "id": 1253, "url": "https://svs.gsfc.nasa.gov/1253/", "result_type": "Visualization", "release_date": "2000-06-25T12:00:00-04:00", "title": "Greenland: Top-down View of Island Tour with Airplane Tracks", "description": "Top-down view of Greenland Island tour.This animation shows the ice concentration in Greenland. The ice has decreased significantly (~50 cm/year) along the coast and increased slightly in the center (+2 cm/year). Researchers view this as yet another serious warning sign of the threat of global warming. || ", "hits": 26 }, { "id": 1255, "url": "https://svs.gsfc.nasa.gov/1255/", "result_type": "Visualization", "release_date": "2000-06-25T12:00:00-04:00", "title": "Greenland: Full West Coast", "description": "This animation shows the ice concentration in Greenland. The ice has decreased significantly (~50 cm/year) along the coast and increased slightly in the center (+2 cm/year). Researchers view this as yet another serious warning sign of the threat of global warming. || ", "hits": 16 }, { "id": 1256, "url": "https://svs.gsfc.nasa.gov/1256/", "result_type": "Visualization", "release_date": "2000-06-25T12:00:00-04:00", "title": "Greenland: Full West Coast (2nd render)", "description": "This animation shows the ice concentration in Greenland. The ice has decreased significantly (~50 cm/year) along the coast and increased slightly in the center (+2 cm/year). Researchers view this as yet another serious warning sign of the threat of global warming. || ", "hits": 11 }, { "id": 1257, "url": "https://svs.gsfc.nasa.gov/1257/", "result_type": "Visualization", "release_date": "2000-06-25T12:00:00-04:00", "title": "Greenland: Pan Southern Tip to East Coast", "description": "This animation shows the ice concentration in Greenland. The ice has decreased significantly (~50 cm/year) along the coast and increased slightly in the center (+2 cm/year). Researchers view this as yet another serious warning sign of the threat of global warming. || ", "hits": 7 }, { "id": 1292, "url": "https://svs.gsfc.nasa.gov/1292/", "result_type": "Visualization", "release_date": "2000-06-25T12:00:00-04:00", "title": "Greenland: Pan to West Coast Area of Interest", "description": "This animation shows the ice concentration in Greenland. The ice has decreased significantly (~50 cm/year) along the coast and increased slightly in the center (+2 cm/year). Researchers view this as yet another serious warning sign of the threat of global warming. || ", "hits": 7 }, { "id": 1293, "url": "https://svs.gsfc.nasa.gov/1293/", "result_type": "Visualization", "release_date": "2000-06-25T12:00:00-04:00", "title": "Greenland: Short Pan to East Coast Area of Interest", "description": "This animation shows the ice concentration in Greenland. The ice has decreased significantly (~50 cm/year) along the coast and increased slightly in the center (+2 cm/year). Researchers view this as yet another serious warning sign of the threat of global warming. || ", "hits": 6 }, { "id": 580, "url": "https://svs.gsfc.nasa.gov/580/", "result_type": "Visualization", "release_date": "1999-03-04T12:00:00-05:00", "title": "Greenland: Airplane Animation Revealing Ice Change", "description": "This animation is match-moved to animation #581. || Animation of an airplane collecting ice thickness data over Greenland with the Airborne Topographic Mapper || a000580.00100_print.png (720x480) [399.6 KB] || a000580_pre.jpg (320x242) [6.6 KB] || a000580.webmhd.webm (960x540) [3.7 MB] || a000580.dv (720x480) [114.7 MB] || a000580.mp4 (640x480) [6.3 MB] || a000580.mpg (352x240) [4.3 MB] || ", "hits": 14 }, { "id": 581, "url": "https://svs.gsfc.nasa.gov/581/", "result_type": "Visualization", "release_date": "1999-03-04T12:00:00-05:00", "title": "Greenland: Raw Data Flight Paths Showing Ice Change", "description": "Raw data flight paths over Greenland as they were collected. Match-moved to to airplane animation #580. || ", "hits": 26 }, { "id": 582, "url": "https://svs.gsfc.nasa.gov/582/", "result_type": "Visualization", "release_date": "1999-03-04T12:00:00-05:00", "title": "Greenland: Single Flight Path Showing Ice Change", "description": "One raw data swath over Greenland. Match-moved to animations #583 and #584. || Animation showing one of the flight paths over Greenland, colored using ice thickness change data from the Airborne Topographic Mapper || a000582.00095_print.png (720x480) [421.5 KB] || a000582_pre.jpg (320x242) [7.5 KB] || a000582.webmhd.webm (960x540) [2.8 MB] || a000582.dv (720x480) [63.9 MB] || a000582.mp4 (640x480) [3.5 MB] || a000582.mpg (352x240) [2.1 MB] || ", "hits": 9 }, { "id": 583, "url": "https://svs.gsfc.nasa.gov/583/", "result_type": "Visualization", "release_date": "1999-03-04T12:00:00-05:00", "title": "Greenland: Multiple Flight Paths Showing Ice Change", "description": "This animation shows all the strips of data collected by the aircraft-mounted laser altimeter flying over Greenland. Match-moved to animations #584 and #582. || Animation of flight paths showing ice thickness changes as measured by the Airborne Topographic Mapper || a000583.00010_print.png (720x480) [492.1 KB] || a000583_pre.jpg (320x242) [11.3 KB] || a000583.webmhd.webm (960x540) [4.2 MB] || a000583.dv (720x480) [63.7 MB] || a000583.mp4 (640x480) [3.5 MB] || a000583.mpg (352x240) [2.2 MB] || ", "hits": 9 }, { "id": 584, "url": "https://svs.gsfc.nasa.gov/584/", "result_type": "Visualization", "release_date": "1999-03-04T12:00:00-05:00", "title": "Greenland: Ice Change", "description": "This animation shows ice loss on Greenland via interpolated laser altimeter data. This animation has been match-moved to animations #583 and #582. || ", "hits": 4 }, { "id": 585, "url": "https://svs.gsfc.nasa.gov/585/", "result_type": "Visualization", "release_date": "1999-03-04T12:00:00-05:00", "title": "Greenland: East Coast Zoom-down without Ice Data", "description": "Match-moved to animation #586 and the reverse of #587. || ", "hits": 10 }, { "id": 586, "url": "https://svs.gsfc.nasa.gov/586/", "result_type": "Visualization", "release_date": "1999-03-04T12:00:00-05:00", "title": "Greenland: East Coast Zoom-down With Ice Data", "description": "The largest decrease in ice elevation occurred on Greenland's east coast. Dark blue indicates the area of largest ice loss. This animation is match-moved to animation #585 and the reverse of #588. || ", "hits": 10 }, { "id": 588, "url": "https://svs.gsfc.nasa.gov/588/", "result_type": "Visualization", "release_date": "1999-03-04T12:00:00-05:00", "title": "Greenland: East Coast Zoom-out With Ice Data", "description": "Dark blue indicates large amounts of ice loss, and light blue indicates lesser amounts of ice loss. This animation is match-moved to animation #587. || ", "hits": 15 } ] }