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The radial grid on the lunar orbit plane is stationary relative to the stars. It appears to rotate because our point of view is fixed to the Earth-Sun line; we're following the Earth as it orbits the Sun. At first glance, the line of nodes appears to be tracking with the grid, but in reality it's slowly turning westward (clockwise), completing a full revolution in 18.6 years.
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"page_type": "Produced Video",
"title": "The Moon's Role in a Solar Eclipse",
"description": "This video explains how our moon creates a solar eclipse, why it's such a rare event to see, and how data from NASA's Lunar Reconnaissance Orbiter has enhanced our ability to map an eclipse's path of totality.Music Provided by Universal Production Music: “Bring Me Up” – Anders Gunnar Kampe & Henrik Lars Wikstrom.Watch this video on the NASA.gov Video YouTube channel. || MoonsRoleEclipseThumnail_print.jpg (1024x576) [40.9 KB] || LROSolarEclipse_Thumbnail.jpg (1080x1920) [491.4 KB] || MoonsRoleEclipseThumnail_searchweb.png (320x180) [34.1 KB] || MoonsRoleEclipseThumnail_thm.png (80x40) [4.4 KB] || 12648_MoonsRoleInASolarEclipse_Facebook.webm (1280x720) [21.0 MB] || MoonsRoleEclipseThumnail.tif (1920x1080) [7.9 MB] || 12648_MoonsRoleInASolarEclipse_Facebook.mp4 (1280x720) [219.1 MB] || 12648_MoonsRoleInASolarEclipse_YOUTUBE_1080.mp4 (1920x1080) [296.7 MB] || 12648_MoonsRoleInASolarEclipse_Captions.en_US.srt [3.7 KB] || 12648_MoonsRoleInASolarEclipse_Captions.en_US.vtt [3.7 KB] || 12648_MoonsRoleInASolarEclipse_MASTER.mov (1920x1080) [4.1 GB] || ",
"release_date": "2017-07-21T10:00:00-04:00",
"update_date": "2023-05-03T13:47:32.550643-04:00",
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"alt_text": "This video explains how our moon creates a solar eclipse, why it's such a rare event to see, and how data from NASA's Lunar Reconnaissance Orbiter has enhanced our ability to map an eclipse's path of totality.Music Provided by Universal Production Music: “Bring Me Up” – Anders Gunnar Kampe & Henrik Lars Wikstrom.Watch this video on the NASA.gov Video YouTube channel.",
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"title": "What determines when we have an eclipse?",
"description": "Music: Witch Waltz by Dorian KellyComplete transcript available.Watch this video on the NASA Goddard YouTube channel. || EclipsePlane_V7.00001_print.jpg (1024x576) [79.6 KB] || EclipsePlane_V7.00001_searchweb.png (320x180) [62.0 KB] || EclipsePlane_V7.00001_thm.png (80x40) [3.8 KB] || EclipsePlane_V7.mp4 (1920x1080) [63.0 MB] || EclipsePlane_V7_1.mp4 (1920x1080) [91.4 MB] || EclipsePlane_V7.webm (1920x1080) [5.7 MB] || EclipsePlane_V7.en_US.srt [499 bytes] || EclipsePlane_V7.en_US.vtt [511 bytes] || EclipsePlane_V7.mov (1920x1080) [1.6 GB] || ",
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"alt_text": "Music: Witch Waltz by Dorian KellyComplete transcript available.Watch this video on the NASA Goddard YouTube channel.",
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"title": "Rare Total Solar Eclipse Is Only Two Months Away Live Shots 6.21.17",
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"release_date": "2017-06-13T14:00:00-04:00",
"update_date": "2023-05-03T13:47:36.391531-04:00",
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"alt_text": "B-roll for the live shots",
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{
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"url": "https://svs.gsfc.nasa.gov/4390/",
"page_type": "Visualization",
"title": "2017 Eclipse: Earth, Moon and Sun",
"description": "The Moon moves right to left in its orbit around the Earth. The shadow it casts hits the Earth during the August 21, 2017 total solar eclipse. || sun_earth.0240_print.jpg (1024x576) [41.2 KB] || sun_earth.0240_searchweb.png (320x180) [37.9 KB] || sun_earth.0240_thm.png (80x40) [3.9 KB] || eclipse2017sunearth_1080p30.mp4 (1920x1080) [3.6 MB] || eclipse2017sunearth_720p30.mp4 (1280x720) [1.6 MB] || 1920x1080_16x9_30p (1920x1080) [0 Item(s)] || eclipse2017sunearth_720p30.webm (1280x720) [2.7 MB] || eclipse2017sunearth_360p30.mp4 (640x360) [514.7 KB] || eclipse2017sunearth_1080p30.mp4.hwshow [193 bytes] || ",
"release_date": "2015-10-20T00:00:00-04:00",
"update_date": "2025-01-05T22:50:38.885412-05:00",
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"filename": "sun_earth_eclipse_print.jpg",
"media_type": "Image",
"alt_text": "A print-resolution still image showing the Earth, Moon, and Sun at 17:05:40 UTC during the August 21, 2017 eclipse. The image is 12 × 9 inches at 300 DPI.",
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"url": "https://svs.gsfc.nasa.gov/4314/",
"page_type": "Visualization",
"title": "2017 Total Solar Eclipse in the U.S.",
"description": "A view of the United States during the total solar eclipse of August 21, 2017, showing the umbra (black oval), penumbra (concentric shaded ovals), and path of totality (red) through or very near several major cities. || usa.0780_print.jpg (1024x576) [144.7 KB] || usa.0780_searchweb.png (320x180) [90.1 KB] || usa.0780_thm.png (80x40) [6.8 KB] || eclipse2017usa_1080p30.mp4 (1920x1080) [26.0 MB] || eclipse2017usa_720p30.mp4 (1280x720) [14.0 MB] || eclipse2017usa_720p30.webm (1280x720) [5.0 MB] || fancy (1920x1080) [0 Item(s)] || eclipse2017usa_2160p30.mp4 (3840x2160) [69.5 MB] || eclipse2017usa_360p30.mp4 (640x360) [5.1 MB] || fancy (3840x2160) [0 Item(s)] || 9600x3240_3x1_30p (9600x3240) [0 Item(s)] || 2017_US_eclipse_4314.pptx [14.6 MB] || 2017_US_eclipse_4314.key [17.1 MB] || ",
"release_date": "2015-09-09T10:00:00-04:00",
"update_date": "2025-02-02T00:07:13.266670-05:00",
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"id": 442536,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004300/a004314/usa.0780_print.jpg",
"filename": "usa.0780_print.jpg",
"media_type": "Image",
"alt_text": "A view of the United States during the total solar eclipse of August 21, 2017, showing the umbra (black oval), penumbra (concentric shaded ovals), and path of totality (red) through or very near several major cities.",
"width": 1024,
"height": 576,
"pixels": 589824
}
},
{
"id": 4321,
"url": "https://svs.gsfc.nasa.gov/4321/",
"page_type": "Visualization",
"title": "2017 Eclipse Shadow Cones",
"description": "The umbral and penumbral shadow cones travel across the surface of the Earth during the August 21, 2017 total solar eclipse. || cones.0885_print.jpg (1024x576) [79.2 KB] || cones.0885_searchweb.png (320x180) [46.7 KB] || cones.0885_thm.png (80x40) [4.1 KB] || shadow_cones_1080p30.mp4 (1920x1080) [13.9 MB] || shadow_cones_720p30.mp4 (1280x720) [6.9 MB] || shadow_cones_720p30.webm (1280x720) [5.6 MB] || shadow_cones_720p30.wmv (1280x720) [17.9 MB] || 1920x1080_16x9_30p (1920x1080) [0 Item(s)] || shadow_cones_360p30.mp4 (640x360) [2.3 MB] || 2017-eclipse-shadow-cones-mp4.hwshow [217 bytes] || ",
"release_date": "2015-09-09T10:00:00-04:00",
"update_date": "2025-01-05T00:06:11.167278-05:00",
"main_image": {
"id": 442334,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004300/a004321/cones.0885_print.jpg",
"filename": "cones.0885_print.jpg",
"media_type": "Image",
"alt_text": "The umbral and penumbral shadow cones travel across the surface of the Earth during the August 21, 2017 total solar eclipse.",
"width": 1024,
"height": 576,
"pixels": 589824
}
},
{
"id": 4158,
"url": "https://svs.gsfc.nasa.gov/4158/",
"page_type": "Visualization",
"title": "Lunar Eclipses and the Moon's Orbit",
"description": "The animations on this page illustrate the Moon’s orbit and its role in lunar and solar eclipses. A solar eclipse happens when the Moon’s shadow falls on the Earth, while a lunar eclipse happens when the Earth’s shadow falls on the Moon.Eclipses can only happen at New and Full Moon, when the Earth, Moon, and Sun are all in a straight line. But they don’t happen every New and Full Moon, because the Moon’s orbit is tilted by about 5 degrees. As the Earth and Moon travel around the Sun, the tilt of the Moon’s orbit changes direction relative to the Sun.This is analogous to the way the tilt of the Earth causes seasons. Just like winter and summer happen every six months, eclipses tend to occur on a roughly six-month cycle.Unlike most eclipse shadow diagrams, the first three animations here don’t greatly exaggerate the scale of the Earth and Moon. They are only 2x their true scale. The view is exactly perpendicular to the Earth-Sun line. The angle of the Moon’s orbital tilt and the “tapering” of the shadows are both accurate. The orbit happens to be calculated for the months preceding the April 15, 2014 total lunar eclipse. || ",
"release_date": "2014-04-10T00:00:00-04:00",
"update_date": "2023-05-03T13:51:00.773818-04:00",
"main_image": {
"id": 456617,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004100/a004158/tilt.1200_preview.jpg",
"filename": "tilt.1200_preview.jpg",
"media_type": "Image",
"alt_text": "Initially viewed from overhead, the Moon orbits the Earth until it appears to enter the Earth's shadow. The view then rotates down into the ecliptic plane, showing that the tilt of the Moon's orbit causes it to miss the Earth's shadow. The movie fast-forwards several months, showing the rotation of the Moon's orbital plane with respect to the Sun, until the Moon really does enter the Earth's shadow.",
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"height": 450,
"pixels": 360000
}
}
],
"sources": [],
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{
"id": 12481,
"url": "https://svs.gsfc.nasa.gov/12481/",
"page_type": "Produced Video",
"title": "2017's All American Solar Eclipse",
"description": "On August 21, 2017, a solar eclipse will be visible across North America. || usa_suns.0750_print.jpg (1024x576) [140.4 KB] || usa_suns.0750_1024x576.jpg (1024x576) [129.2 KB] || usa_suns.0750_searchweb.png (320x180) [88.7 KB] || usa_suns.0750_thm.png (80x40) [6.9 KB] || usa_suns.0750.tif (1920x1080) [5.0 MB] || ",
"release_date": "2017-03-27T12:00:00-04:00",
"update_date": "2023-05-03T13:47:49.365449-04:00",
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"media_type": "Image",
"alt_text": "On August 21, 2017, a solar eclipse will be visible across North America.",
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}
},
{
"id": 12117,
"url": "https://svs.gsfc.nasa.gov/12117/",
"page_type": "Produced Video",
"title": "Visualizing the 2017 All-American Eclipse",
"description": "Complete transcript available.Watch this video on the NASAgovVideo YouTube channel.This video is also available on our YouTube channel. || sun_earth.0240_print.jpg (1024x576) [41.2 KB] || sun_earth.0240_searchweb.png (320x180) [37.9 KB] || sun_earth.0240_thm.png (80x40) [3.9 KB] || LARGE_MP4_12117_visualizing_2017_eclipseV2_large.mp4 (1920x1080) [98.4 MB] || 12117_visualizing_2017_eclipseV2.mov (1920x1080) [2.6 GB] || YOUTUBE_HQ_12117_visualizing_2017_eclipseV2_youtube_hq.mov (1920x1080) [302.9 MB] || WEBM_12117_visualizing_2017_eclipseV2.webm (960x540) [37.4 MB] || PRORES_B-ROLL_12117_visualizing_2017_eclipseV2_prores.mov (1280x720) [1.3 GB] || 12117_visualizing_2017_eclipseV2.en_US.srt [1.5 KB] || 12117_visualizing_2017_eclipseV2.en_US.vtt [1.5 KB] || 12117_visualizing_2017_eclipseV2_lowres.mp4 (480x272) [13.6 MB] || NASA_PODCAST_12117_visualizing_2017_eclipseV2_ipod_sm.mp4 (320x240) [17.1 MB] || ",
"release_date": "2016-04-14T12:00:00-04:00",
"update_date": "2023-05-03T13:48:43.369447-04:00",
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"media_type": "Image",
"alt_text": "Complete transcript available.Watch this video on the NASAgovVideo YouTube channel.This video is also available on our YouTube channel.",
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}
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