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The four spacecraft, each identically engineered, make up the Magnetospheric Multiscale, or MMS, mission. Flying in a pyramid-shaped configuration, the spacecraft will orbit Earth and pass through areas known to be reconnection sites. Each reconnection event unleashes a massive burst of energy that can accelerate particles within Earth’s protective magnetic environment, known as the magnetosphere, to nearly the speed of light. Sensors onboard the spacecraft will measure the energy and movement of charged particles during an event, providing scientists with the first three-dimensional look at this phenomenon. 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The Magnetospheric Multiscale, or MMS, mission will provide the first three-dimensional views of this fundamental process that can accelerate particles to nearly the speed of light. MMS uses Earth’s protective magnetic space environment, the magnetosphere, as a natural laboratory to directly measure reconnection. Reconnection is a common processes in our universe; occurring in space near Earth, in the atmosphere of the sun and other stars, in the vicinity of black holes and neutron stars, and at virtually any boundary between space plasmas, including the boundary between our solar system's heliosphere and interstellar space. || ", "release_date": "2014-05-15T01:30:00-04:00", "update_date": "2023-11-14T00:18:57.484699-05:00", "main_image": { "id": 456129, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011500/a011526/reconnection.jpg", "filename": "reconnection.jpg", "media_type": "Image", "alt_text": "A movie trailer about the MMS mission.Watch this video on the NASAexplorer YouTube channel.For complete transcript, click here.", "width": 1280, "height": 720, "pixels": 921600 } }, { "id": 11485, "url": "https://svs.gsfc.nasa.gov/11485/", "page_type": "Produced Video", "title": "MMS Narrated Orbit", "description": "Scientist John Dorelli explains the MMS mission's orbit and why the four spacecraft fly in a tetrahedron formation. On its journey, MMS will observe a little-understood, but universal phenomenon called magnetic reconnection, responsible for dramatic re-shaping of the magnetic environment near Earth, often sending intense amounts of energy and fast-moving particles off in a new direction. Not only is this a fundamental physical process that occurs throughout the universe, it is also one of the drivers of space weather events at Earth. 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This process is called magnetic reconnection and can occur throughout all space. || ", "release_date": "2014-04-18T10:00:00-04:00", "update_date": "2023-11-14T00:18:57.239517-05:00", "main_image": { "id": 456231, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011500/a011524/MMSstack720.jpg", "filename": "MMSstack720.jpg", "media_type": "Image", "alt_text": "Watch this video on the NASAexplorer YouTube channel.", "width": 1280, "height": 720, "pixels": 921600 } } ], "sources": [], "products": [ { "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": 12239, "url": "https://svs.gsfc.nasa.gov/12239/", "page_type": "Produced Video", "title": "MMS First Results", "description": "This short video outlines the MMS mission and its first results. 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.mov (1920x1080) [4.2 GB] || PRORES_B-ROLL_12239_MMS_First_ResultsV2_prores.mov (1280x720) [2.2 GB] || YOUTUBE_HQ_12239_MMS_First_ResultsV2_youtube_hq.mov (1920x1080) [1.1 GB] || 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] || 12239_MMS_First_ResultsV2_lowres.mp4 (480x272) [21.6 MB] || 12239_MMS_First_ResultsV2_ipod_sm.mp4 (320x240) [26.3 MB] || ", "release_date": "2016-05-12T13:00:00-04:00", "update_date": "2024-03-12T00:18:58.187792-04:00", "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 } } ], "newer_versions": [], "older_versions": [], "alternate_versions": [] }