{ "count": 20, "next": null, "previous": null, "results": [ { "id": 13148, "url": "https://svs.gsfc.nasa.gov/13148/", "result_type": "Produced Video", "release_date": "2019-02-12T08:00:00-05:00", "title": "5 Things About Earth’s Radiation Donuts", "description": "5 Things About Earth’s Radiation Donuts || HalloweenBeltProfile.slate_GSE.HRstills.0000_print.jpg (1024x576) [124.2 KB] || HalloweenBeltProfile.slate_GSE.HRstills.0000.jpg (2560x1440) [721.8 KB] || HalloweenBeltProfile.slate_GSE.HRstills.0000_searchweb.png (320x180) [88.2 KB] || HalloweenBeltProfile.slate_GSE.HRstills.0000_thm.png (80x40) [6.1 KB] || RADIATIONDONUTSSVSV2.mp4 (1280x720) [114.9 MB] || RADIATIONDONUTSSVSV2.webm (1280x720) [12.2 MB] || VanAllenShowCaptions.en_US.srt [2.2 KB] || VanAllenShowCaptions.en_US.vtt [2.2 KB] || ", "hits": 77 }, { "id": 4595, "url": "https://svs.gsfc.nasa.gov/4595/", "result_type": "Visualization", "release_date": "2017-11-27T10:00:00-05:00", "title": "Mapping Particle Injections in Earth's Magnetosphere", "description": "A view from above the northern hemisphere of particle injection propagation constructed from their respective satellite detections. Distinct injections, and their detection by satellites, are represented by different colors. || MagnetosphereMultiMission.top.GSE.AU.clockSlate_EarthTarget.HD1080i.01200_print.jpg (1024x576) [115.4 KB] || MagnetosphereMultiMission.top.GSE.AU.clockSlate_EarthTarget.HD1080i.01200_searchweb.png (320x180) [82.7 KB] || MagnetosphereMultiMission.top.GSE.AU.clockSlate_EarthTarget.HD1080i.01200_thm.png (80x40) [6.3 KB] || TopView (1920x1080) [0 Item(s)] || MagnetosphereMultiMission.top.HD1080i_p30.mp4 (1920x1080) [29.7 MB] || MagnetosphereMultiMission.top.HD1080i_p30.webm (1920x1080) [6.1 MB] || TopView (3840x2160) [0 Item(s)] || MagnetosphereMultiMission.top.UHD3840_2160p30.mp4 (3840x2160) [93.0 MB] || MagnetosphereMultiMission.top.HD1080i_p30.mp4.hwshow [207 bytes] || ", "hits": 60 }, { "id": 4557, "url": "https://svs.gsfc.nasa.gov/4557/", "result_type": "Visualization", "release_date": "2017-03-15T10:00:00-04:00", "title": "Leaky Radiation Belts", "description": "This visualization opens with a full view of the radiation belt of trapped electrons circling Earth. We open a slice of the belts, to display a cross-section for clarity and move the camera to a more equatorial view. Earth rotation and solar motion have been turned off for this visualization to reduce distracting additional motions. || LeakyBelts_FullData_ObliqueIntro.slate_CRTT.HD1080i.0600_print.jpg (1024x576) [113.8 KB] || LeakyBelts_FullData_ObliqueIntro.slate_CRTT.HD1080i.0600_searchweb.png (180x320) [83.0 KB] || LeakyBelts_FullData_ObliqueIntro.slate_CRTT.HD1080i.0600_thm.png (80x40) [6.0 KB] || ObliqueIntro (1920x1080) [0 Item(s)] || LeakyBelts_FullData_ObliqueIntro.HD1080i_p30.mp4 (1920x1080) [77.0 MB] || LeakyBelts_FullData_ObliqueIntro.HD1080i_p30.webm (1920x1080) [5.5 MB] || ObliqueIntro (3840x2160) [0 Item(s)] || LeakyBelts_FullData_ObliqueIntro.UHD2160_p30.mp4 (3840x2160) [279.0 MB] || LeakyBelts_FullData_ObliqueIntro.HD1080i_p30.mp4.hwshow [210 bytes] || ", "hits": 61 }, { "id": 12379, "url": "https://svs.gsfc.nasa.gov/12379/", "result_type": "Produced Video", "release_date": "2016-09-28T10:00:00-04:00", "title": "Space Radiation Highlights", "description": "A collection of space radiation highlights featuring:NASA's Van Allen ProbesNASA's CubeSats || ", "hits": 62 }, { "id": 4480, "url": "https://svs.gsfc.nasa.gov/4480/", "result_type": "Visualization", "release_date": "2016-08-15T14:00:00-04:00", "title": "Prompt Electron Acceleration in the Radiation Belts", "description": "Electrons gyrating along the lines of Earth's magnetic field make another orbit around Earth and strike the Van Allen Probe A AGAIN! || PromptAccel_EventCloseup_SlowOblique.slate_RigRHS.HD1080i.0540_print.jpg (1024x576) [139.2 KB] || PromptAccel_EventCloseup_SlowOblique.slate_RigRHS.HD1080i.0540_searchweb.png (320x180) [90.9 KB] || PromptAccel_EventCloseup_SlowOblique.slate_RigRHS.HD1080i.0540_thm.png (80x40) [6.0 KB] || 1920x1080_16x9_30p (1920x1080) [0 Item(s)] || PromptAccel.HD1080i_p30.mp4 (1920x1080) [48.5 MB] || PromptAccel.HD1080i_p30.webm (1920x1080) [3.1 MB] || PromptAccel_EventCloseup_SlowOblique.HD1080i_720p30.mp4 (1280x720) [24.1 MB] || 3840x2160_16x9_30p (3840x2160) [0 Item(s)] || PromptAccel_EventCloseup_SlowOblique_2160p30.mp4 (3840x2160) [141.9 MB] || PromptAccel.HD1080i_p30.mp4.hwshow [189 bytes] || ", "hits": 216 }, { "id": 12328, "url": "https://svs.gsfc.nasa.gov/12328/", "result_type": "Produced Video", "release_date": "2016-08-15T10:00:00-04:00", "title": "Supercharging the Radiation Belts", "description": "On March 17, 2015, an interplanetary shock – a shockwave created by the driving force of a coronal mass ejection, or CME, from the sun – struck the outermost radiation belt, triggering the greatest geomagnetic storm of the preceding decade. And NASA's Van Allen Probes were there to watch it. One of the most common forms of space weather, a geomagnetic storm describes any event in which Earth’s magnetic environment – called the magnetosphere – is suddenly, temporarily disturbed. Such an event can also lead to change in the radiation belts surrounding Earth, but researchers have seldom been able to observe what happens within the first few minutes immediately following a shock. But on the day of the March 2015 geomagnetic storm, one of the Van Allen Probes was located at just the right spot within the radiation belts, providing unprecedentedly high-resolution data from a rarely witnessed phenomenon. A paper on these observations was published in the Journal of Geophysical Research on Aug. 15, 2016. || ", "hits": 85 }, { "id": 4241, "url": "https://svs.gsfc.nasa.gov/4241/", "result_type": "Visualization", "release_date": "2014-11-26T13:00:00-05:00", "title": "Radiation Belts & Plasmapause", "description": "Visualization of the radiation belts with confined charged particles (blue & yellow) and plasmapause boundary (blue-green surface) || Earth_BeltsPlasmapauseParticles_Oblique.noslate_GSEmove.HD1080i.0400_print.jpg (1024x576) [136.6 KB] || Earth_BeltsPlasmapauseParticles_Oblique.noslate_GSEmove.HD1080i.0400_web.png (320x180) [96.2 KB] || Earth_BeltsPlasmapauseParticles_Oblique.noslate_GSEmove.HD1080i.0400_searchweb.png (320x180) [96.2 KB] || Earth_BeltsPlasmapauseParticles_Oblique.noslate_GSEmove.HD1080i.0400_thm.png (80x40) [6.9 KB] || BeltsPlasmapauseParticles_HD1080.mov (1920x1080) [28.3 MB] || Earth_BeltsPlasmapauseParticles_Oblique_HD1080.mp4 (1920x1080) [16.6 MB] || BeltsPlasmapauseParticles_HD720.mov (1280x720) [10.6 MB] || 1920x1080_16x9_30p (1920x1080) [0 Item(s)] || Earth_BeltsPlasmapauseParticles_Oblique_HD1080.webm (960x540) [2.3 MB] || BeltsPlasmapauseParticles_iPod.m4v (640x360) [3.7 MB] || radiation-belts--plasmapause.hwshow [342 bytes] || ", "hits": 139 }, { "id": 4048, "url": "https://svs.gsfc.nasa.gov/4048/", "result_type": "Visualization", "release_date": "2013-02-28T14:00:00-05:00", "title": "Van Allen Probes New View of the Radiation Belts", "description": "This visualization is constructed from some of the first data from the Van Allen Probes (formerly RBSP).The belts are constructed from particle samples by the probes as they pass through the belt, so each 3-D snapshot corresponds to the outward or inward portion of the probes' orbit.The major result from this early data is the recognition of a third radiation belt (the outer belt appears to actually be two belts). || ", "hits": 270 }, { "id": 11212, "url": "https://svs.gsfc.nasa.gov/11212/", "result_type": "Produced Video", "release_date": "2013-02-28T14:00:00-05:00", "title": "Van Allen Probes Find Storage Ring in Earth's Outer Radiation Belt", "description": "Since their discovery over 50 years ago, the Earth's Van Allen radiation belts have been considered to consist of two distinct zones of trapped, highly energetic charged particles. Observations from NASA's Van Allen Probes reveal an isolated third ring in the outer radiation belt. || ", "hits": 293 }, { "id": 11069, "url": "https://svs.gsfc.nasa.gov/11069/", "result_type": "Produced Video", "release_date": "2012-11-09T12:00:00-05:00", "title": "Van Allen Probes Overview", "description": "The Van Allen Probes (formerly the Radiation Belt Storm Probes, RBSP) will explore the Van Allen Radiation Belts in the Earth's magnetosphere. The charged particles in these regions can be hazardous to both spacecraft and astronauts. Project Scientist Dr. David Sibeck explains the how the mission will explore space weather — changes in Earth's space environment caused by the sun — that can disable satellites, create power grid failures and disrupt GPS service. The mission also will allow researchers to understand fundamental radiation and particle acceleration processes throughout the universe.The 2-year mission launched Thursday, Aug. 23 from Cape Canaveral Air Force Station in Florida. The twin probes lifted off on a United Launch Alliance Atlas V rocket. || ", "hits": 106 }, { "id": 4006, "url": "https://svs.gsfc.nasa.gov/4006/", "result_type": "Visualization", "release_date": "2012-10-31T00:00:00-04:00", "title": "The Radiation Belts as seen by SAMPEX", "description": "This is a simulation of the Earth's radiation belts constructed from SAMPEX data around the time of the 2003 Halloween solar storms. In this visualization, we present the belts in cross-section to provide a better view of their interior structure.The Earth's magnetosphere is a very large magnetic structure around the Earth, and gets stretched into a large, teardrop-shaped configuration through its interaction with the solar wind. A number of the magnetic field lines, while they may originate on the Earth, do not connect back to the Earth, but connect into the magnetic field carried by the solar wind. However, near the Earth, the magnetic dipole component of the field is stronger than the solar wind field, and this allows all the magnetic field lines to connect back to the Earth, forming (approximately) the classic magnetic dipole configuration (Wikipedia). In this region, lower energy electrons and ions, many from the Earth's ionosphere, can become trapped by the magnetic field to form the radiation belts.The radiation belt model is constructed from particle flux information from the SAMPEX mission, with the flux mapped to constant L-shells of the Earth's dipole magnetic field (Wikipedia). The model is anchored to the Earth's geomagnetic field axis, which is not perfectly aligned with the Earth's rotation axis. This creates a small wobble of the radiation belts with time, which can be seen in this visualization.The data driving the radiation belt structure is from the 2003 Halloween solar storms, a series of strong solar eruptions that began in late October 2003 and continued into the first week of November. During this time, the particle content of the belts change rapidly due to the variation in the energetic particle flux from the Sun buffeting the Earth's magnetosphere.This dataset was also used to generate radiation belts for the RBSP prelaunch visualizations. || ", "hits": 57 }, { "id": 3951, "url": "https://svs.gsfc.nasa.gov/3951/", "result_type": "Visualization", "release_date": "2012-05-08T00:00:00-04:00", "title": "The Van Allen Probes (formerly Radiation Belt Storm Probes - RBSP) Explore the Earth's Radiation Belts", "description": "The Radiation Belt Storm Probe (RBSP) is actually two satellites that will travel on a elliptical orbit around the Earth, ranging between 1.5 and 6 Earth radii. This range covers the inner region of the Earth's geomagnetic field. In this region, many of the magnetic field lines intersect the surface of the Earth in the north and south. This means that lower energy ions and electrons, some 'boiled off' the Earth's ionosphere by solar ultraviolet radiation, can be trapped along these field lines. The charged particles spend their time bouncing between the 'mirror points' in the Earth's magnetic field. This trapped population forms the radiation belts around the Earth. The radiation created by this charged particle population can be hazardous to satellites and astronauts so it is important to understand their characteristics. || ", "hits": 100 }, { "id": 3950, "url": "https://svs.gsfc.nasa.gov/3950/", "result_type": "Visualization", "release_date": "2012-05-01T00:00:00-04:00", "title": "Earth's Radiation Belts (cross-section)", "description": "This is a simulation of the Earth's radiation belts. In this version, we've 'sliced' the belts open to provide a better view of their structure in cross-section. The non-cross-section view of the belts is Earth's Radiation Belts (side view)The Earth's magnetosphere is a very large magnetic structure around the Earth, and gets stretched into a large, teardrop-shaped configuration through its interaction with the solar wind. A number of the magnetic field lines, while they may originate on the Earth, do not connect back to the Earth, but connect into the magnetic field carried by the solar wind. However, near the Earth, the dipole component of the field is stronger than the solar wind field, and this allows all the magnetic field lines to connect back to the Earth, forming (approximately) the classic magnetic dipole configuration. In this region, lower energy electrons and ions, many from the Earth's ionosphere, can become trapped by the magnetic field to form the radiation belts.The radiation belt model is constructed from particle flux information from the SAMPEX mission, with the flux mapped to constant L-shells of the Earth's dipole magnetic field. The model is anchored to the Earth's geomagnetic field axis, which is not perfectly aligned with the Earth's rotation axis. This creates a small wobble of the radiation belts with time, which can be seen in this visualization.The data driving the radiation belt structure is time-shifted from the 2003 Halloween solar storms, a series of strong solar eruptions that began in late October 2003 and continued into the first week of November. During this time, the particle content of the belts change rapidly due to the variation in the energetic particle flux from the Sun buffeting the Earth's magnetosphere. || ", "hits": 230 }, { "id": 10652, "url": "https://svs.gsfc.nasa.gov/10652/", "result_type": "Produced Video", "release_date": "2010-09-17T00:00:00-04:00", "title": "Firefly Sees Electrons Populate the Radiation Belts", "description": "The small satellite, with a big mission, is appropriately named \"Firefly.\" Sponsored by the National Science Foundation (NSF), the pint-sized satellite will study the most powerful natural particle accelerator on Earth - lightning - when it launches from the Marshall Islands aboard an Air Force Falcon 1E rocket vehicle next year. In particular, Firefly will focus on Terrestrial Gamma-ray Flashes (TGFs), a little understood phenomenon first discovered by NASA's Compton Gamma-Ray Observatory in the early 1990s.Although no one knows why, it appears these flashes of gamma rays that were once thought to occur only far out in space near black holes or other high-energy cosmic phenomena are somehow linked to lightning.fly's instruments, Goddard scientist Doug Rowland and his collaborators - Universities Space Research Association in Columbia, Md., Siena College, located near Albany, N.Y., and the Hawk Institute for Space Studies in Pocomoke City, Md. - hope to answer what causes these high-energy flashes. In particular, they want to find out if lightning triggers them or if they trigger lightning. Could they be responsible for some of the high-energy particles in the Van Allen radiation belts, which damage satellites? Firefly is expected to observe up to 50 lightning strokes per day, and about one large TGF every couple days. || ", "hits": 32 }, { "id": 20066, "url": "https://svs.gsfc.nasa.gov/20066/", "result_type": "Animation", "release_date": "2005-05-05T12:00:00-04:00", "title": "Cutaway View of the Earth's Radiation Belts", "description": "Energetic electrons and ions can get trapped in the Earth's geomagnetic field forming a toroidal region around the planet known as the radiation belts. || radbeltCutaway_640x480_pre.00077_print.jpg (1024x768) [76.3 KB] || radbeltCutaway_640x480_thm.png (80x40) [13.5 KB] || radbeltCutaway_640x480_pre.jpg (320x240) [5.3 KB] || radbeltCutaway_320x240_pre.jpg (320x240) [5.2 KB] || radbeltCutaway_320x240_pre_searchweb.jpg (320x180) [42.7 KB] || radbeltCutaway_NTSC.webmhd.webm (960x540) [1.0 MB] || 720x486_4x3_30 (720x486) [32.0 KB] || radbeltCutaway_640x480.mpg (640x480) [10.7 MB] || radbeltCutaway_NTSC.m2v (720x480) [17.2 MB] || a010068_seq.mpg (720x480) [9.2 MB] || a010068_H264_640x480.mp4 (640x480) [7.4 MB] || radbeltCutaway_320x240.mpg (320x240) [2.8 MB] || ", "hits": 181 }, { "id": 20065, "url": "https://svs.gsfc.nasa.gov/20065/", "result_type": "Animation", "release_date": "2005-04-27T12:00:00-04:00", "title": "Lightning Makes a Safe Zone in the Earth's Radiation Belts", "description": "Radio waves generated by terrestrial lighting get propagated by electrons along the Earth's magnetic field lines and sweep high-energy electrons away from their path. This opens a 'Safe Zone' in the radiation belts. || ", "hits": 72 }, { "id": 3115, "url": "https://svs.gsfc.nasa.gov/3115/", "result_type": "Visualization", "release_date": "2005-03-08T12:00:00-05:00", "title": "Gaps in the Earth's Radiation Belts", "description": "The Earth's radiation belts (violet & white) change considerably due to a number of influences, ranging from a changing solar wind to the lightning on the Earth. Here we see a range of variation in the electron flux in early December 2003. White indicates higher electron flux than violet. The gray curves represent the lines of the Earth's magnetic field. These radiation belts are constructed on a per-orbit basis with data from SAMPEX. || ", "hits": 42 }, { "id": 3048, "url": "https://svs.gsfc.nasa.gov/3048/", "result_type": "Visualization", "release_date": "2004-12-15T12:00:00-05:00", "title": "Earth's Radiation Belts Tremble Under Impact of Solar Storm", "description": "Under the wave of energetic particles from the Halloween 2003 solar storm events, the Earth's radiation belts underwent significant changes in structure. This visualization is constructed using daily-averaged particle flux data from the SAMPEX satellite installed in a simple dipole model for the Earth's magnetic field. The toroidal structure of the belts corresponds to regions with electron fluxes in excess of 100 electrons/s/cm^2/steradian with energies of 2-6 MeV. The color-scale on the cross section is violet for low flux and white for high flux. The translucent gray arcs represent the fields lines of the Earth's dipole field. The 3-dimensional structure was built from the SAMPEX measurement by propagating the particle flux values along field lines of a simple magnetic dipole.NOTE: This visualization shows the Earth's magnetic dipole field lines rotating rigidly with the Earth. Technically, this is inaccurate. Ions and electrons in the lower atmosphere can create currents which can make these lines 'drag' with Earth's rotation, but this will occur mostly near the Earth and not higher up. More details on this process can be found in the FAQ at the The Exploration of the Earth's Magnetosphere web site, Does the Earth's magnetic field rotate?. || ", "hits": 57 }, { "id": 3049, "url": "https://svs.gsfc.nasa.gov/3049/", "result_type": "Visualization", "release_date": "2004-12-15T12:00:00-05:00", "title": "Radiation Belts and Plasmapause Fluctuate Under Solar Storm", "description": "In this visualization, we see the interaction of the radiation belts (violet/white), the plasmapause (green surface) and magnetopause (gray surface).NOTE: This visualization shows the Earth's magnetic dipole field lines rotating rigidly with the Earth. Technically, this is inaccurate. Ions and electrons in the lower atmosphere can create currents which can make these lines 'drag' with Earth's rotation, but this will occur mostly near the Earth and not higher up. More details on this process can be found in the FAQ at the The Exploration of the Earth's Magnetosphere web site, Does the Earth's magnetic field rotate?. || ", "hits": 46 }, { "id": 3052, "url": "https://svs.gsfc.nasa.gov/3052/", "result_type": "Visualization", "release_date": "2004-12-15T12:00:00-05:00", "title": "Earth's Radiation Belts with Safe Zone Orbit", "description": "Spacecraft orbiting in the 'Safe Zone', between two and three Earth radii, can be subjected to high levels of harmful radiation as the radiation belts fluctuate in response to space weather events.NOTE: This visualization shows the Earth's magnetic dipole field lines rotating rigidly with the Earth. Technically, this is inaccurate. Ions and electrons in the lower atmosphere can create currents which can make these lines 'drag' with Earth's rotation, but this will occur mostly near the Earth and not higher up. More details on this process can be found in the FAQ at the The Exploration of the Earth's Magnetosphere web site, Does the Earth's magnetic field rotate?. || ", "hits": 102 } ] }