{ "count": 22, "next": null, "previous": null, "results": [ { "id": 12543, "url": "https://svs.gsfc.nasa.gov/12543/", "result_type": "Produced Video", "release_date": "2018-04-30T12:00:00-04:00", "title": "The Electron Beltway", "description": "NASA's Van Allen Probes reveal how electrons move through the radiation belts that surround Earth. || 12249_1280.jpg (1280x720) [576.4 KB] || 12249_1280_1024x576.jpg (1024x576) [386.3 KB] || ", "hits": 63 }, { "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": 281 }, { "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": 116 }, { "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": 159 }, { "id": 11239, "url": "https://svs.gsfc.nasa.gov/11239/", "result_type": "Produced Video", "release_date": "2013-05-02T00:00:00-04:00", "title": "Ring Around Our Planet", "description": "Within days of its launch on August 30, 2012, NASA's Van Allen Probes collected data that will rewrite textbooks. The mission consists of two spacecraft orbiting through the radiation belts encircling Earth. Scientists want to understand what causes the changing shapes of the belts—a region that can sometimes swell dramatically in response to incoming energy from the sun, posing a threat to satellites and spacecraft. Inner and outer radiation belts were discovered in 1958 with instruments on the very first U.S. satellites sent into space. But in September 2012 something happened that had never been recorded before: the particles that make up the belts settled into a new configuration, separating into three belts instead of two. The third belt lasted for four weeks, proving that the Van Allen Probes have much left to explore in near-Earth space. Watch the visualization to see what the Van Allen Probes observed. || ", "hits": 63 }, { "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": 312 }, { "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": 292 }, { "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": 108 }, { "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": 53 }, { "id": 11077, "url": "https://svs.gsfc.nasa.gov/11077/", "result_type": "Produced Video", "release_date": "2012-09-11T00:00:00-04:00", "title": "Built To Last", "description": "NASA's Radiation Belt Storm Probes (RBSP) satellites were launched into space just before dawn on August 30, 2012. The mission was designed like none before it to penetrate and observe the Van Allen Belts, two dynamic swaths of radiation surrounding Earth that can wreak havoc on spacecraft electronics and potentially harm astronauts. Most satellites are put into orbit above or below the belts for protection. But, with thick aluminum shielding sensitive instruments, the twin RBSP satellites were built to go into the heart of the harshest radiation anywhere around Earth. As the belts vary unpredictably in size and intensity, the two identical spacecraft will provide multiple vantage points of these changes and ultimately lead to a better understanding of how energy from the sun affects the fluctuations. The visualization shows how the spacecraft will fly in an unusual, highly elliptical orbit to collect data throughout the vastness of the Van Allen Belts. || ", "hits": 46 }, { "id": 3949, "url": "https://svs.gsfc.nasa.gov/3949/", "result_type": "Visualization", "release_date": "2012-05-08T00:00:00-04:00", "title": "Earth's Radiation Belts (side view)", "description": "This is a simulation of the Earth's radiation belts. In this version, we've kept the belts full structure. There is also a cross-section view of the belts in Earth's Radiation Belts (cross-section).The Earth's magnetosphere is a very large magnetic structure around the Earth, which gets stretched into a large, teardrop-shaped configuration through its interaction with the solar wind. A number of the magnetic field lines, which 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": 22 }, { "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": 138 }, { "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": 241 }, { "id": 3942, "url": "https://svs.gsfc.nasa.gov/3942/", "result_type": "Visualization", "release_date": "2012-04-19T00:00:00-04:00", "title": "The Van Allen Probes (formerly RBSP for Radiation Belt Storm Probes) in Earth Orbit", "description": "A basic visualization illustrating the orbit of RBSP around the Earth. This pair of probes will orbit the Earth between about 1.5 and 6 Earth radii to cover the region of the geomagnetically trapped particle radiation. || ", "hits": 32 }, { "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": 49 }, { "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": 52 }, { "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 }, { "id": 90, "url": "https://svs.gsfc.nasa.gov/90/", "result_type": "Visualization", "release_date": "1995-11-07T12:00:00-05:00", "title": "SAMPEX - Yohkoh: Solar Modification of Relativistic Electrons in the Earth's Radiation Belts", "description": "The Solar Anomalous and Magnetospheric Particle Explorer, SAMPEX, measures fluxes of energetic particles from the sun, the Earth's magnetosphere, and cosmic ray sources over a broad range of energies. The four instruments aboard SAMPEX are the Low-Energy Ion Analyzer (LEICA), The Heavy Ion Large Telescope (HILT), The Mass Spectrometer Telescope (MAST), and the Proton-Electron Telescope (PET). The Soft X-ray Telescope on the Yohkoh satellite takes daily full-disk soft X-ray images of the Sun. Comparing data sets from the two satellites allows correlation of electron fluxes in the Earth's radiation belts with solar output. || ", "hits": 45 }, { "id": 89, "url": "https://svs.gsfc.nasa.gov/89/", "result_type": "Visualization", "release_date": "1995-01-01T12:00:00-05:00", "title": "SAMPEX - A Synoptic View of Earth's Electron Radiation Belts: North Pole Energetic Fluxes from HILT", "description": "The Solar Anomalous and Magnetospheric Particle Explorer, SAMPEX, measures fluxes of energetic particles from the sun, the Earth's magnetosphere, and cosmic ray sources over a broad range of energies. The four instruments aboard SAMPEX are the Low-Energy Ion Analyzer (LEICA), The Heavy Ion Large Telescope (HILT), The Mass Spectrometer Telescope (MAST), and the Proton-Electron Telescope (PET). || ", "hits": 44 }, { "id": 1385, "url": "https://svs.gsfc.nasa.gov/1385/", "result_type": "Visualization", "release_date": "1995-01-01T12:00:00-05:00", "title": "SAMPEX - A Synoptic View of Earth's Electron Radiation Belts: South Pole Energetic Fluxes from HILT", "description": "The Solar Anomalous and Magnetospheric Particle Explorer, SAMPEX, measures fluxes of energetic particles from the sun, the Earth's magnetosphere, and cosmic ray sources over a broad range of energies. The four instruments aboard SAMPEX are the Low-Energy Ion Analyzer (LEICA), The Heavy Ion Large Telescope (HILT), The Mass Spectrometer Telescope (MAST), and the Proton-Electron Telescope (PET). || ", "hits": 12 }, { "id": 1386, "url": "https://svs.gsfc.nasa.gov/1386/", "result_type": "Visualization", "release_date": "1995-01-01T12:00:00-05:00", "title": "SAMPEX - A Synoptic View of Earth's Electron Radiation Belts: North Pole Energetic Fluxes from PET", "description": "The Solar Anomalous and Magnetospheric Particle Explorer, SAMPEX, measures fluxes of energetic particles from the sun, the Earth's magnetosphere, and cosmic ray sources over a broad range of energies. The four instruments aboard SAMPEX are the Low-Energy Ion Analyzer (LEICA), The Heavy Ion Large Telescope (HILT), The Mass Spectrometer Telescope (MAST), and the Proton-Electron Telescope (PET). || ", "hits": 8 }, { "id": 1387, "url": "https://svs.gsfc.nasa.gov/1387/", "result_type": "Visualization", "release_date": "1995-01-01T12:00:00-05:00", "title": "SAMPEX - A Synoptic View of Earth's Electron Radiation Belts: South Pole Energetic Fluxes from PET", "description": "The Solar Anomalous and Magnetospheric Particle Explorer, SAMPEX, measures fluxes of energetic particles from the sun, the Earth's magnetosphere, and cosmic ray sources over a broad range of energies. The four instruments aboard SAMPEX are the Low-Energy Ion Analyzer (LEICA), The Heavy Ion Large Telescope (HILT), The Mass Spectrometer Telescope (MAST), and the Proton-Electron Telescope (PET). || ", "hits": 7 } ] }