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        {
            "id": 4986,
            "url": "https://svs.gsfc.nasa.gov/4986/",
            "result_type": "Visualization",
            "release_date": "2022-03-29T11:00:00-04:00",
            "title": "Space Geodesy Project",
            "description": "NASA's Space Geodesy Project (SGP) uses a variety of space- and land-based techniques to determine the precise shape, position, and orientation of the Earth with respect to the Terrestrial Reference Frame (TRF) and Earth orientation parameters (EOP). This visualization presents a summary of these techniques.The visualization begins with a shot of natural-looking Earth, then transitions to a view that shows the orbital components of the SGP, which include global navigation satellite systems (GNSS), satellite laser ranging (SLR) and Doppler Orbitography by Radiopositioning Integrated on Satellite (DORIS). The view then moves to the surface of the Earth, showing the positions and direction of the motion of ground stations as measured by these techniques, as well by ground-based very long baseline interferometry (VLBI), which uses the radio emissions of distant quasars to determine geodetic measurements.We then zoom into the center of the Earth to show the consequence of these surface motions: the movement of the geocenter, which these techniques can determine to within millimeters. || ",
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        {
            "id": 14121,
            "url": "https://svs.gsfc.nasa.gov/14121/",
            "result_type": "Produced Video",
            "release_date": "2022-03-29T11:00:00-04:00",
            "title": "The Geocenter of the Earth Is Changing (And Why That Matters)",
            "description": "Stock Footage: Pond5Universal Production Music: Kinda Frantic by Steve Rucker [ASCAP]This video can be freely shared and downloaded. While the video in its entirety can be shared without permission, some individual imagery provided by pond5.com is obtained through permission and may not be excised or remixed in other products. For more information on NASA’s media guidelines, visit https://www.nasa.gov/multimedia/guidelines/index.htmlComplete transcript available. || 14121_Geodesy.jpg (1920x1080) [538.3 KB] || 14121_Geodesy_searchweb.png (320x180) [94.1 KB] || 14121_Geodesy_thm.png (80x40) [5.9 KB] || 14121_Geocenter.mp4 (1920x1080) [252.5 MB] || 14121_Geocenter_TWITTER.mp4 (1280x720) [65.3 MB] || 14121_Geocenter_TWITTER.webm (1280x720) [26.6 MB] || 14121_Geocenter.webm (1920x1080) [26.9 MB] || 14121_Geocenter_en.us.en_US.srt [5.3 KB] || 14121_Geocenter_en.us.en_US.vtt [5.1 KB] || ",
            "hits": 122
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        {
            "id": 11010,
            "url": "https://svs.gsfc.nasa.gov/11010/",
            "result_type": "Produced Video",
            "release_date": "2012-07-10T00:00:00-04:00",
            "title": "Sizing Up Earth",
            "description": "At a given point in time, Earth usually seems stable. But over centuries, lands rise and sink, continents move and the balance of the ocean shifts. These changes are tracked through the science of geodesy, dedicated to measuring and precisely charting the size and shape of Earth. Geodesy began more than 2,000 years ago, when the Greek scholar Eratosthenes calculated the circumference of Earth with impressive accuracy. In modern geodesy, scientists use multiple techniques to map the world's ice sheets, watch sea level creep up and monitor the impact of earthquakes, droughts and floods. This animated video looks at the long history of geodesy and highlights some of the technologies NASA uses, such as radio telescopes and long-range lasers, to take the basic measure of our planet. || ",
            "hits": 175
        },
        {
            "id": 11031,
            "url": "https://svs.gsfc.nasa.gov/11031/",
            "result_type": "Produced Video",
            "release_date": "2012-07-05T07:00:00-04:00",
            "title": "Space Geodesy Profiles",
            "description": "Scientists from NASA's Space Geodesy Project discuss the techniques they use to precisely measure the Earth's position in the universe, determine the Earth's center of mass, calibrate satellites, observe sea level rise, and track the movements of the tectonic plates. || ",
            "hits": 26
        },
        {
            "id": 10910,
            "url": "https://svs.gsfc.nasa.gov/10910/",
            "result_type": "Produced Video",
            "release_date": "2012-02-23T14:00:00-05:00",
            "title": "Looking Down a Well: A Brief History of Geodesy",
            "description": "Geodesy is a field of study that deals with the measurement and representation of the Earth, and it all started when a clever human named Eratosthenes discovered that you could measure the circumference of the Earth by looking down a well. Over time, the field of geodesy has expanded and evolved dramatically, and NASA uses technology like radio telescopes, ground surveys, and satellites to contribute! Learn more about geodesy in this video! || ",
            "hits": 129
        }
    ]
}