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Since it launched, MMS has made more than 4,000 trips through the magnetic boundaries around Earth, each time gathering information about the way the magnetic fields and particles move. A surprising result was that at the moment of interconnection between the sun’s magnetic field lines and those of Earth the crescents turned abruptly so that the electrons flowed along the field lines. By watching these electron tracers, MMS made the first observation of the predicted breaking and interconnection of magnetic fields in space. Credit: NASA/GSFCWatch this video on the NASA Goddard YouTube channel. || mmsthumb.jpg (1280x720) [139.4 KB] || mmsthumb_print.jpg (1024x576) [161.8 KB] || mmsthumb_searchweb.png (320x180) [104.3 KB] || mmsthumb_web.png (320x180) [104.3 KB] || mmsthumb_thm.png (80x40) [6.8 KB] || 12239_MMS_First_ResultsV2_appletv.m4v (1280x720) [76.9 MB] || 12239_MMS_First_ResultsV2.webm (1920x1080) [18.1 MB] || 12239_MMS_First_ResultsV2_appletv_subtitles.m4v (1280x720) [77.0 MB] || 12239_MMS_First_ResultsV2.en_US.srt [3.0 KB] || 12239_MMS_First_ResultsV2.en_US.vtt [3.0 KB] || YOUTUBE_HQ_12239_MMS_First_ResultsV2_youtube_hq.mov (1920x1080) [1.1 GB] || 12239_MMS_First_ResultsV2_lowres.mp4 (480x272) [21.6 MB] || 12239_MMS_First_ResultsV2_ipod_sm.mp4 (320x240) [26.3 MB] || PRORES_B-ROLL_12239_MMS_First_ResultsV2_prores.mov (1280x720) [2.2 GB] || 12239_MMS_First_ResultsV2.mov (1920x1080) [4.2 GB] || YOUTUBE_HQ_12239_MMS_First_ResultsV2_youtube_hq.mov.hwshow [100 bytes] || ", "release_date": "2016-05-12T13:00:00-04:00", "update_date": "2025-01-06T01:31:18.790641-05:00", "main_image": { "id": 424657, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a012200/a012239/movieZoomedInJerry4Crafts2Converted.00005_print.jpg", "filename": "movieZoomedInJerry4Crafts2Converted.00005_print.jpg", "media_type": "Image", "alt_text": "This numerical simulation represents the event observed with MMS. It shows magnetic field lines in black with the background color denoting the electric current density directed out of the plane. Red regions have stronger electric currents. The breaking of magnetic fields in these high current regions is magnetic reconnection. In the event observed by MMS, Earth would be to the left and the Sun would be far to the right. The spacecraft crossed through the region where reconnection occurs in the vertical direction. The movie is courtesy of Paul Cassak, Department of Physics and Astronomy, West Virginia University, with input from Tai Phan (Berkeley), Jim Burch (SwRI), and Jerry Goldstein (SwRI). The movie was made using computational resources from the National Energy Research Scientific Computing (NERSC) Center, a Department of Energy user facility.", "width": 1024, "height": 1059, "pixels": 1084416 } } ], "sources": [], "products": [ { "id": 14835, "url": "https://svs.gsfc.nasa.gov/14835/", "page_type": "Produced Video", "title": "What Happened During the Biggest Geomagnetic Storm in Over 20 Years", "description": "On May 10, 2024, the first G5 or “severe” geomagnetic storm in over two decades hit Earth. The event did not cause any catastrophic damages, but it did produce surprising effects on Earth. The storm, which has been called the best-documented geomagnetic storm in history, spread auroras to unusually low latitudes and produced effects spanning from the ground to near-Earth space. Data captured during this historic event will be analyzed for years to come, revealing new lessons about the nature of geomagnetic storms and how best to weather them.Learn more:• What NASA Is Learning from the Biggest Geomagnetic Storm in 20 Years• How NASA Tracked the Most Intense Solar Storm in Decades || ", "release_date": "2025-05-09T15:00:00-04:00", "update_date": "2025-07-18T12:09:29.461432-04:00", "main_image": { "id": 1154957, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014800/a014835/14835_MayStorms_H264.00001_web.png", "filename": "14835_MayStorms_H264.00001_web.png", "media_type": "Image", "alt_text": "Watch this video on the NASA Goddard YouTube channel.Music credits: “Set in the Sky” by Nicholas Smith [PRS]; “Constant Motion”, “Future Now”, and “Currents” by Ben Niblett [PRS] and Jon Cotton [PRS]; “Bow Down To Me” by Max Cameron Concors [ASCAP] and Victoria Faith Beaumont [PRS]; “Moto Perpetuo” by Laurent Dury [SACEM]. Aurora imagery is used with permission. Aurora credits in order of appearance: Neil Zeller, Randell Sean Inoc, Xicao Liu, Bill Dunford, Shelley Tonkin, Alistair Luckman, Shane Turgeon, Kimberly Sibbald, Kylie Reid, Adam Block, Darius Yeoh, William Hudson, Quinn Keon.", "width": 320, "height": 180, "pixels": 57600 } }, { "id": 12901, "url": "https://svs.gsfc.nasa.gov/12901/", "page_type": "Produced Video", "title": "NASA Spacecraft Finds New Magnetic Process in Turbulent Space", "description": "Though close to home, the space immediately around Earth is full of hidden secrets and invisible processes. In a new discovery reported in the journal Nature, scientists working with NASA’s Magnetospheric Multiscale spacecraft — MMS — have uncovered a new type of magnetic event in our near-Earth environment by using an innovative technique to squeeze extra information out of the data.Magnetic reconnection is one of the most important processes in the space — filled with charged particles known as plasma — around Earth. This fundamental process dissipates magnetic energy and propels charged particles, both of which contribute to a dynamic space weather system that scientists want to better understand, and even someday predict, as we do terrestrial weather. Reconnection occurs when crossed magnetic field lines snap, explosively flinging away nearby particles at high speeds. The new discovery found reconnection where it has never been seen before — in turbulent plasma. || ", "release_date": "2018-05-09T13:00:00-04:00", "update_date": "2023-05-03T13:46:49.900876-04:00", "main_image": { "id": 405569, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a012900/a012901/LARGE_MP4_12901_TurbulentPlasma_MagneticReconnection_large.00204_print.jpg", "filename": "LARGE_MP4_12901_TurbulentPlasma_MagneticReconnection_large.00204_print.jpg", "media_type": "Image", "alt_text": "Conceptual animation - Explosive Magnetic Reconnection in Turbulent PlasmaIn a turbulent magnetic environment, magnetic field lines become scrambled. As the field lines cross, intense electric currents (shown here as bright regions) form and eventually trigger magnetic reconnection (indicated by a flash), which is an explosive event that releases magnetic energy accumulated in the current layers and ejects high-speed bi-directional jets of electrons. NASA’s Magnetospheric Multiscale mission witnessed this process in action as it flew through the electron jets the turbulent boundary just at the edge of Earth’s magnetic environment.Credit: NASA Goddard’s Conceptual Image Lab/Lisa Poje\rSimulations by: University of Chicago/Colby Haggerty; University of Delaware/Tulasi ParasharWatch this video on the NASA.gov Video YouTube channel.\r", "width": 1024, "height": 576, "pixels": 589824 } }, { "id": 12249, "url": "https://svs.gsfc.nasa.gov/12249/", "page_type": "Produced Video", "title": "Earth's Magnetism In Action", "description": "Scientists make a breakthrough in observing the dynamic magnetic system surrounding our planet. || c-1024.jpg (1024x576) [385.4 KB] || c-1280.jpg (1280x720) [576.4 KB] || c-1024_print.jpg (1024x576) [403.6 KB] || c-1024_searchweb.png (320x180) [137.4 KB] || c-1024_web.png (320x180) [137.4 KB] || c-1024_thm.png (80x40) [24.5 KB] || ", "release_date": "2016-05-24T11:00:00-04:00", "update_date": "2023-05-03T13:48:35.815142-04:00", "main_image": { "id": 424052, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a012200/a012249/c-1024_print.jpg", "filename": "c-1024_print.jpg", "media_type": "Image", "alt_text": "Scientists make a breakthrough in observing the dynamic magnetic system surrounding our planet.", "width": 1024, "height": 576, "pixels": 589824 } } ], "newer_versions": [], "older_versions": [], "alternate_versions": [] }