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"Solar Wind", "Space Weather", "Sun-earth Interactions" ], "recommended_pages": [], "related": [ { "id": 11158, "url": "https://svs.gsfc.nasa.gov/11158/", "page_type": "Produced Video", "title": "Sun Grazing Comets as Solar Probes", "description": "To observe how winds move high in Earth's atmosphere, scientists sometimes release clouds of barium as tracers to track how the material corkscrews and sweeps around — but scientists have no similar technique to study the turbulent atmosphere of the sun. So researchers were excited in December 2011, when Comet Lovejoy swept right through the sun's corona with its long tail streaming behind it. NASA's Solar Dynamics Observatory (SDO) captured images of the comet, showing how its long tail was buffeted by systems around the sun, offering scientists a unique way of observing movement as if they'd orchestrated the experiment themselves. Since comet tails have ionized gases, they are also affected by the sun's magnetic field, and can act as tracers of the complex magnetic system higher up in the atmosphere. Comets can also aid in the study of coronal mass ejections and the solar wind.Watch this video on YouTube. || ", "release_date": "2012-12-04T15:00:00-05:00", "update_date": "2023-05-03T13:52:33.497083-04:00", "main_image": { "id": 469988, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011100/a011158/LovejoyCloseup_stand.HD1080i.00600.jpg", "filename": "LovejoyCloseup_stand.HD1080i.00600.jpg", "media_type": "Image", "alt_text": "Short narrated video.For complete transcript, click here.", "width": 1920, "height": 1080, "pixels": 2073600 } }, { "id": 10966, "url": "https://svs.gsfc.nasa.gov/10966/", "page_type": "Produced Video", "title": "SDO: Year 2", "description": "April 21, 2012 marks the two-year anniversary of the Solar Dynamics Observatory (SDO) First Light press conference, where NASA revealed the first images taken by the spacecraft. This video highlights just some of the amazing events witnessed in SDO's second year. || ", "release_date": "2012-04-20T08:00:00-04:00", "update_date": "2024-04-28T00:18:18.560431-04:00", "main_image": { "id": 476549, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a010900/a010966/y2.180.png", "filename": "y2.180.png", "media_type": "Image", "alt_text": "For complete transcript, click here.", "width": 320, "height": 180, "pixels": 57600 } } ], "sources": [], "products": [], "newer_versions": [], "older_versions": [], "alternate_versions": [] }