{ "count": 11, "next": null, "previous": null, "results": [ { "id": 4370, "url": "https://svs.gsfc.nasa.gov/4370/", "result_type": "Visualization", "release_date": "2015-11-05T14:00:00-05:00", "title": "Solar Wind Strips the Martian Atmosphere", "description": "Scientists have long suspected the solar wind of stripping the Martian upper atmosphere into space, turning Mars from a blue world to a red one. Now, NASA's MAVEN orbiter is observing this process in action, providing significant data on solar wind erosion at Mars.Watch this video on the NASA Goddard YouTube channel.Complete transcript available.This video is also available on our YouTube channel. || MarsAtmoLossExplainPreview.jpg (1920x1080) [993.6 KB] || APPLE_TV_4370_MAVEN_Mars_Atmo_Loss_appletv_subtitles.m4v (1280x720) [53.7 MB] || WEBM_4370_MAVEN_Mars_Atmo_Loss_APR.webm (960x540) [44.7 MB] || 4370_MAVEN_Mars_Atmo_Loss_appletv.m4v (1280x720) [53.7 MB] || NASA_TV_4370_MAVEN_Mars_Atmo_Loss.mpeg (1280x720) [369.5 MB] || 4370_MAVEN_Mars_Atmo_Loss_APR_Output.en_US.srt [2.3 KB] || 4370_MAVEN_Mars_Atmo_Loss_APR_Output.en_US.vtt [2.3 KB] || LARGE_MP4_4370_MAVEN_Mars_Atmo_Loss_large.mp4 (3840x2160) [111.3 MB] || YOUTUBE_HQ_4370_MAVEN_Mars_Atmo_Loss_youtube_hq.mov (3840x2160) [2.2 GB] || 4370_MAVEN_Mars_Atmo_Loss_APR.mov (3840x2160) [5.9 GB] || ", "hits": 301 }, { "id": 4393, "url": "https://svs.gsfc.nasa.gov/4393/", "result_type": "Visualization", "release_date": "2015-11-05T14:00:00-05:00", "title": "Solar Wind and Mars Bow Shock", "description": "Simulation of the solar wind at Mars compared with MAVEN observations, showing the predicted bow shock. Available for download in up to 4k resolution. || final_shock01.2500_print.jpg (1024x576) [205.3 KB] || final_shock01.2500_searchweb.png (320x180) [100.4 KB] || final_shock01.2500_thm.png (80x40) [6.6 KB] || final_shock01_1920x1080_60fps.mp4 (1920x1080) [66.6 MB] || APPLE_TV_4393_Mars_Solar_Wind_Bow_Shock_1920x1080_appletv.m4v (1280x720) [19.0 MB] || WEBM_4393_Mars_Solar_Wind_Bow_Shock_1920x1080.webm (960x540) [15.1 MB] || 1920x1080_16x9_60p (1920x1080) [0 Item(s)] || NASA_TV_4393_Mars_Solar_Wind_Bow_Shock_1920x1080.mpeg (1280x720) [128.4 MB] || PRORES_B-ROLL_4393_Mars_Solar_Wind_Bow_Shock_1920x1080_prores.mov (1280x720) [537.1 MB] || 3840x2160_16x9_60p (3840x2160) [0 Item(s)] || 4393_Mars_Solar_Wind_Bow_Shock_1920x1080.mov (1920x1080) [1.0 GB] || final_shock01_4k_60fps.mp4 (3840x2160) [214.3 MB] || ", "hits": 79 }, { "id": 4279, "url": "https://svs.gsfc.nasa.gov/4279/", "result_type": "Visualization", "release_date": "2015-03-11T12:00:00-04:00", "title": "Magnetospheric Reconnection - July 2012", "description": "Profile view of magnetosphere. Density data slice in x-z plane. || Earth_Reconnect-July2012mII_Profile.noslate_GSEmove.HD1080i.0818_print.jpg (1024x576) [135.8 KB] || Earth_Reconnect-July2012mII_Profile.HD1080.mov (1920x1080) [377.5 MB] || Profile (1920x1080) [256.0 KB] || Earth_Reconnect-July2012mII_Profile_HD1080.mp4 (1920x1080) [141.3 MB] || Earth_Reconnect-July2012mII_Profile.HD1080.webm (1920x1080) [11.3 MB] || ", "hits": 61 }, { "id": 4188, "url": "https://svs.gsfc.nasa.gov/4188/", "result_type": "Visualization", "release_date": "2014-09-25T10:00:00-04:00", "title": "Comparative Magnetospheres: A Noteworthy Coronal Mass Ejection", "description": "In an effort to understand and predict the impact of space weather events on Earth, the Community-Coordinated Modeling Center (CCMC) at NASA Goddard Space Flight Center, routinely runs computer models of the many historical events. These model runs are then compared to actual data to determine ways to improve the model, and therefore forecasts of the impacts of future space weather events.In mid-December of 2006, the Sun erupted with a bright flare and coronal mass ejection (CME) that launched particles Earthward. While not the brightest or largest event observed, its impact on Earth was substantial, requiring some effort to protect satellites (ESA: Reacting to a solar flare).The visualization presented here is a CCMC run of a BATS-R-US model simulating the impact of this event on Earth. Here, lines are used to represent the 'flow direction' of magnetic field of the solar wind impacting Earth, as well as the effects on Earth's geomagnetic field. A 'cut-plane' through the data illustrates the changes in the particle density in the solar wind and magnetosphere. The color of the data represents a logarithmic scaling of density, with red as the highest (1000 particles per cubic centimeter) down to blue (0.01 particles per cubic centimeter). In this simulation, each frame of the movie corresponds to two minutes of real time.In the movie, we see vertical field lines of magnetic field carried by the solar wind, coming in from the left. As this field, and the plasma carrying it, strike Earth's magnetic field, they bend and reconnect, around the Earth. Some field lines actually reconnect to the polar regions of the Earth, providing a ready flow-path for particles to reach the ionosphere and generate aurora. This interaction between the solar wind and the plasma trapped in Earth's magnetosphere also creates a density enhancement between Earth and the solar wind helping to shield Earth from some of the effects. A lower density wake forms behind Earth (the blue region). There is a circular 'hole' around the Earth which is a gap in the model. || ", "hits": 99 }, { "id": 4189, "url": "https://svs.gsfc.nasa.gov/4189/", "result_type": "Visualization", "release_date": "2014-09-25T10:00:00-04:00", "title": "Comparative Magnetospheres: A Carrington-Class CME", "description": "In an effort to understand and predict the impact of space weather events on Earth, the Community-Coordinated Modeling Center (CCMC) at NASA Goddard Space Flight Center, routinely runs computer models of the many historical events. These model runs are then compared to actual data to determine ways to improve the model, and therefore forecasts of the impacts of future space weather events.But sometimes we don't have an actual event where we have lots of data for comparison. Extreme space weather events are one example where we must test models with a rather limited set of data.This is a model run used to examine the consequences if a large coronal mass ejection (CME) such as The Carrington-Class CME of 2012 had actual hit Earth. Such model runs allow us to estimate consequences of a large event hitting Earth so we can better protect power grids and satellites.Some of the conclusions from this model run are (documented in the paper linked below):The magnetopause is compressed to the point it is moved inside the orbits of our geosynchronous satellites.Large field-aligned currents are created on the night-side of Earth, generating large ionospheric potentials.At high latitudes, geo-electric fields of 26 volts per kilometer can be generated.For comparison, the geo-electric field of the March 1989 storm which generated an extensive power outage in Canada (Wikipedia) had a value of only about 6 volts per kilometer; and the 2003 Halloween solar storms (see Halloween Solar Storms 2003) generated a field of about 12 volts per kilometer. || ", "hits": 116 }, { "id": 3551, "url": "https://svs.gsfc.nasa.gov/3551/", "result_type": "Visualization", "release_date": "2012-09-01T00:00:00-04:00", "title": "The Coronal Mass Ejection strikes the Earth!", "description": "This visualization is the sequel to animation ID 3867.The CME we saw before continues to expand from the Sun, and its outer boundary is approaching the Earth. Will the Earth be pummeled like its sister planet, Venus?Not this time, for the Earth has a fairly strong geomagnetic field.The geomagnetic field helps deflect the incoming blast of solar particles around the Earth, dramatically reducing the impact of the event.It is important to note that the flowing material of the CME are actually ions and electrons far too small to see. This visualization tries to represent the motions of these tiny particle in a form large enough for us to see.Technical DetailsThis is the dome show component where the CME strikes the Earth.The domemaster format was created by rendering 7 separate camera tiles. The tiles were then stitched together to form final domemaster layers at 4096x4096 resolution and 16 bits per channel with premultiplied alpha and no gamma correction. There are 2 domemaster layers that should be composited as follows:- Earth, Sun and particles- star field (no alpha channel)In addition to the final domemaster frames and movies, the individual camera tiles are included as well. Each domemaster layer has a set of camera tiles. There are 7 cameras numbered 00 through 06 that represent the itiles. Camera 00 is in the center of the domemaster, camera 01 is looking below camera 00, cameras 01 through 06 look around the outside of the dome master in counter-clockwise order. These frames are probably only useful if a better re-stitching algorithm is ever required to be run on the tiles. || ", "hits": 78 }, { "id": 11003, "url": "https://svs.gsfc.nasa.gov/11003/", "result_type": "Produced Video", "release_date": "2012-06-19T00:00:00-04:00", "title": "Excerpt from \"Dynamic Earth\"", "description": "A giant explosion of magnetic energy from the sun, called a coronal mass ejection, slams into and is deflected completely by the Earth's powerful magnetic field. The sun also continually sends out streams of light and radiation energy. Earth's atmosphere acts like a radiation shield, blocking quite a bit of this energy.Much of the radiation energy that makes it through is reflected back into space by clouds, ice and snow and the energy that remains helps to drive the Earth system, powering a remarkable planetary engine — the climate. It becomes the energy that feeds swirling wind and ocean currents as cold air and surface waters move toward the equator and warm air and water moves toward the poles — all in an attempt to equalize temperatures around the world.A jury appointed by the National Science Foundation (NSF) and Science magazine has selected \"Excerpt from Dynamic Earth\" as the winner of the 2013 NSF International Science and Engineering Visualization Challenge for the Video category. This animation will be highlighted in the February 2014 special section of Science and will be hosted on ScienceMag.org and NSF.govThis animation was selected for the Computer Animation Festival's Electronic Theater at the Association for Computer Machinery's Special Interest Group on Computer Graphics and Interactive Techniques (SIGGRAPH), a prestigious computer graphics and technical research forum. This is an excerpt from the fulldome, high-resolution show 'Dynamic Earth: Exploring Earth's Climate Engine.' The Dynamic Earth dome show was selected as a finalist in the Jackson Hole Wildlife Film Festival Science Media Awards under the category \"Best Immersive Cinema - Fulldome\". || ", "hits": 125 }, { "id": 3902, "url": "https://svs.gsfc.nasa.gov/3902/", "result_type": "Visualization", "release_date": "2012-01-24T00:00:00-05:00", "title": "A Coronal Mass Ejection strikes the Earth!", "description": "Energetic events on the Sun have impacts throughout the Solar System. This visualization, developed for the Dynamic Earth dome show, utilizes data from space weather models based on a real coronal mass ejection (CME) event from mid-December 2003. Particles are used to represent the flow of solar material from the Sun around the Earth. It is important to note that the flowing material of the CME are actually ions and electrons far too small to see. This visualization tries to represent the motions of these tiny particles in a form large enough for us to see. We open with a close-up view of the Earth, the particles representing the solar wind streaming around the Earth due to extended influence of the Earth's magnetic field. We pull out from the Earth and move so that we see the Sun in the distance. The enormous density enhancement in the solar wind is the coronal mass ejection. As the CME reaches the Earth, we see how effective the Earth's magnetic field is at diverting the solar material around the Earth. As the CME passes, we move earthward, and reveal the field lines representing the Earth's magnetic field, emanating from the magnetic poles and blown behind the Earth due to the influence of the solar wind. For simplicity, we have represented the Earth's magnetic field as unchanging, but it is actually very dynamic in its response to a CME or other change in the solar wind. || ", "hits": 111 }, { "id": 3740, "url": "https://svs.gsfc.nasa.gov/3740/", "result_type": "Visualization", "release_date": "2010-07-08T00:00:00-04:00", "title": "Space Weather Event: The View from L1", "description": "We start from a position 'behind' the Earth, looking towards the Sun. From this position we see the orbit of the Moon as well as three of the heliospheric 'sentinels' (see \"Sentinels of the Heliosphere\"), ACE, SOHO, and Wind patrolling along 'halo orbits' (Wikipedia) around the Sun-Earth Lagrange Point, L1.The CME (orange isosurface) erupts, heading towards the Earth. The density enhancement of the CME is visible in slice of data in the Earth's orbit plane which provides a better sense of when the CME actually reaches the Earth.As the particle density enhancement from the CME strikes the Earth, we see the Earth's magnetosphere respond, with the outer, high density surface (red), 'blown away'. This surface location corresponds roughly to the location of the bow shock. The bow shock has not been eliminated, only some of its particles have been depleted, to be carried off in the CME and solar wind. As the densest material of the CME passes (orange surface), plasma from the CME continues to flow by the Earth, stretching the magnetosphere into a long, thin structure behind the Earth.The magnetosphere slowly recovers from the 'impact', and regions that can confine higher particle densities reform - the red surfaces return. But not for long as the rarefaction behind the CME reaches the Earth. This lower density region provides fewer particles to repopulate the magnetosphere and make it easier for particles confined in the magnetosphere to 'leak' out into the solar wind.For the BATS-R-US model, the isosurface colors are: red=20 AMUs per cubic centimeter, yellow=10.0 AMUs per cubic centimeter, light blue=1.0 AMUs per cubic centimeter, and blue=0.1 AMUs per cubic centimeter. An AMU corresponds to about the mass of a hydrogen atom, the dominant component of the solar wind.This visualization is part of a series of visualizations on space weather modeling. || ", "hits": 24 }, { "id": 3743, "url": "https://svs.gsfc.nasa.gov/3743/", "result_type": "Visualization", "release_date": "2010-07-08T00:00:00-04:00", "title": "Space Weather Event: Close-up on the Earth Environment", "description": "We open with a view from high above the ecliptic plane, at the space between the Sun (left) and the Earth (within the small rectangular box on the right). In the plane of the Earth's orbit, we show a 'slice' of the Enlil model showing the particle density profile of the solar wind (white to yellow for decreasing particle density). The spiral 'rotating water sprinkler' pattern in the density is the Parker spiral (Wikipedia). We zoom down to the Earth as the CME (orange surface) erupts in the direction of the Earth and move into a position above the Earth's orbital plane with the Earth (geospace) environment in view.As the particle density enhancement from the CME strikes the Earth, we see the Earth's magnetosphere respond, with the outer, high density surface (red) 'blown away'. This surface location corresponds roughly to the location of the bow shock. The bow shock has not been eliminated, only some of its particles have been depleted, to be carried off in the CME and solar wind. As the densest material of the CME passes (orange surface), plasma from the CME continues to flow by the Earth, stretching the magnetosphere into a long, thin structure behind the Earth.The magnetosphere slowly recovers from the 'impact', and regions that can confine higher particle densities reform - the red surfaces return. But not for long as the rarefaction (Wikipedia) behind the CME reaches the Earth. This lower density region provides fewer particles to repopulate the magnetosphere and makes it easier for particles confined in the magnetosphere to 'leak' out into the solar wind.For the BATS-R-US model, the isosurface colors are: red=20 AMUs per cubic centimeter, yellow=10.0 AMUs per cubic centimeter, light blue=1.0 AMUs per cubic centimeter, and blue=0.1 AMUs per cubic centimeter. An AMU corresponds to about the mass of a hydrogen atom, the dominant component of the solar wind.This visualization is part of a series of visualizations on space weather modeling. || ", "hits": 28 }, { "id": 3739, "url": "https://svs.gsfc.nasa.gov/3739/", "result_type": "Visualization", "release_date": "2010-07-06T00:00:00-04:00", "title": "Space Weather Event: Incoming View", "description": "We open with a view from high above the ecliptic plane, at the space between the Sun (left) and the Earth (within the small rectangular box on the right). In the plane of the Earth's orbit, we show a 'slice' of the Enlil model showing the particle density profile of the solar wind (white to yellow for decreasing particle density). The spiral 'rotating water sprinkler' pattern in the density is the Parker spiral (Wikipedia). The nested grid pattern centered on the Earth, provides a sense of scale to the scene. The smallest grid square in the opening view is 1,000 Earth radii on each side. The scale changes by a factor of ten for each step larger or smaller in size.We zoom down to the Earth as the CME (orange surface) erupts in the direction of the Earth, then move into a position behind the Earth with the Sun visible in the distance.As the particle density enhancement from the CME strikes the Earth, we see the Earth's magnetosphere respond, with the outer, high density surface (red) 'blown away'. This surface location corresponds roughly to the location of the bow shock. The bow shock has not been eliminated, only some of its particles have been depleted, to be carried off in the CME and solar wind. As the densest material of the CME passes (orange surface), plasma from the CME continues to flow by the Earth, stretching the magnetosphere into a long, thin structure behind the Earth.The magnetosphere slowly recovers from the 'impact', and regions that can confine higher particle densities reform - the red surfaces return. But not for long as the rarefaction (Wikipedia) behind the CME reaches the Earth. This lower density region provides fewer particles to repopulate the magnetosphere and makes it easier for particles confined in the magnetosphere to 'leak' out into the solar wind.For the BATS-R-US model, the isosurface colors correpond to densities of: red=20 AMUs per cubic centimeter, yellow=10.0 AMUs per cubic centimeter, light blue=1.0 AMUs per cubic centimeter, and blue=0.1 AMUs per cubic centimeter. An AMU corresponds to about the mass of a hydrogen atom, so the value roughly corresponds to the number of atoms per cubic centimeter.This visualization is part of a series of visualizations on space weather modeling. || ", "hits": 36 } ] }