{ "count": 25, "next": null, "previous": null, "results": [ { "id": 13514, "url": "https://svs.gsfc.nasa.gov/13514/", "result_type": "Produced Video", "release_date": "2019-12-20T17:00:00-05:00", "title": "The Cusp Aurora", "description": "A conceptual animation showing electrons traveling down Earth's magnetic field lines, colliding into oxygen atoms in Earth's atmosphere and causing oxygen molecules to escape and release red light causing the cusp aurora. || YOUTUBE_1080_13514_Cusp_Aurora_from_ground_youtube_1080.00888_print.jpg (1024x576) [70.9 KB] || YOUTUBE_1080_13514_Cusp_Aurora_from_ground_youtube_1080.00888_searchweb.png (320x180) [64.8 KB] || YOUTUBE_1080_13514_Cusp_Aurora_from_ground_youtube_1080.00888_web.png (320x180) [64.8 KB] || YOUTUBE_1080_13514_Cusp_Aurora_from_ground_youtube_1080.00888_thm.png (80x40) [4.4 KB] || FACEBOOK_720_13514_Cusp_Aurora_from_ground_facebook_720.mp4 (1280x720) [49.5 MB] || TWITTER_720_13514_Cusp_Aurora_from_ground_twitter_720.mp4 (1280x720) [8.0 MB] || YOUTUBE_1080_13514_Cusp_Aurora_from_ground_youtube_1080.webm (1920x1080) [4.9 MB] || YOUTUBE_1080_13514_Cusp_Aurora_from_ground_youtube_1080.mp4 (1920x1080) [64.2 MB] || PRORES_B-ROLL_13514_Cusp_Aurora_from_ground_prores_b-roll.mov (1280x720) [346.4 MB] || YOUTUBE_4K_13514_Cusp_Aurora_from_ground_youtube_4k.mp4 (3840x2160) [285.2 MB] || 13514_Cusp_Aurora_from_ground_Prores.mov (3840x2160) [3.9 GB] || ", "hits": 45 }, { "id": 4762, "url": "https://svs.gsfc.nasa.gov/4762/", "result_type": "Visualization", "release_date": "2019-12-10T17:30:00-05:00", "title": "GOLD Instrument observes the July 2019 Total Solar Eclipse", "description": "Comparative visualizations of Earth in visible light and the ultraviolet emission of oxygen recombining from ions. The Appleton anomaly is faintly visible above and below the equator on the nightside of the Earth. This version presents the path of the solar eclipse but variations are available in the popup menu to the right. || GOLDEclipse201907.O5S+VIS_path_UHD3840.00192_print.jpg (1024x576) [68.5 KB] || GOLDEclipse201907.O5S+VIS_path_UHD3840.00192_searchweb.png (320x180) [59.6 KB] || GOLDEclipse201907.O5S+VIS_path_UHD3840.00192_thm.png (80x40) [5.4 KB] || GOLDEclipse201907.O5S+VIS_path_HD1080i_p5.webm (1920x1080) [4.7 MB] || Eclipse2019.O5S_VIS_path (1920x1080) [0 Item(s)] || GOLDEclipse201907.O5S+VIS_path_HD1080i_p5.mp4 (1920x1080) [19.8 MB] || Eclipse2019.O5S_VIS_nopath (1920x1080) [0 Item(s)] || GOLDEclipse201907.O5S+VIS_nopath_HD1080i_p5.mp4 (1920x1080) [20.0 MB] || Eclipse2019.O5S_VIS_nopath (3840x2160) [0 Item(s)] || GOLDEclipse201907.O5S+VIS_nopath_UHD3840_2160p5.mp4 (3840x2160) [64.3 MB] || Eclipse2019.O5S_VIS_path (3840x2160) [0 Item(s)] || GOLDEclipse201907.O5S+VIS_path_UHD3840_2160p5.mp4 (3840x2160) [63.4 MB] || ", "hits": 37 }, { "id": 13430, "url": "https://svs.gsfc.nasa.gov/13430/", "result_type": "Produced Video", "release_date": "2019-11-14T12:00:00-05:00", "title": "Why NASA is sending rockets into Earth’s leaky atmosphere", "description": "In the tiny Arctic town of Ny-Ålesund, where polar bears outnumber people, winter means three months without sunlight. The unending darkness is ideal for those who seek a strange breed of northern lights, normally obscured by daylight. When these unusual auroras shine, Earth’s atmosphere leaks into space.NASA scientists traveled to Ny-Ålesund to launch rockets through these auroras and witness oxygen particles right in the middle of their escape. Piercing these fleeting auroras, some 300 miles high, would require strategy, patience — and a fair bit of luck. This was NASA’s VISIONS-2 mission, and this is their story.VISIONS-2 was just the first of many. Over the coming months, rocket teams from all over the world will launch rockets into this region as part of the Grand Challenge Initiative—Cusp, an international collaboration to study the mysteries of the polar atmosphere. || ", "hits": 59 }, { "id": 13784, "url": "https://svs.gsfc.nasa.gov/13784/", "result_type": "Produced Video", "release_date": "2019-11-13T00:00:00-05:00", "title": "Seasonal Variations in Oxygen at Gale Crater", "description": "For the first time in the history of space exploration, scientists have measured the seasonal changes in the gases that fill the air directly above the surface of Gale Crater on Mars. As a result, they noticed something baffling: oxygen, the gas many Earth creatures use to breathe, behaves in a way that so far scientists cannot explain through any known chemical processes. || ", "hits": 203 }, { "id": 3938, "url": "https://svs.gsfc.nasa.gov/3938/", "result_type": "Visualization", "release_date": "2012-04-11T00:00:00-04:00", "title": "Biosphere Data 2000 through 2004", "description": "The SeaWiFS instrument aboard the SeaStar satellite has been collecting ocean data since 1997. By monitoring the color of reflected light via satellite, scientists can determine how successfully plant life is photosynthesizing. A measurement of photosynthesis is essentially a measurement of successful growth, and growth means successful use of ambient carbon. This animation represents nearly a decade's worth of data taken by the SeaWiFS instrument, showing the abundance of life in the sea and along the Western seaboard of the United States. Dark blue represents warmer areas where there is little life due to lack of nutrients, and greens and reds represent cooler nutrient-rich areas. The nutrient-rich areas include coastal regions where cold water rises from the sea floor bringing nutrients along and areas at the mouths of rivers where the rivers have brought nutrients into the ocean from the land. The nutrient-rich waters contribute to some of the oxygen-poor pockets of the seas called dead zones. || ", "hits": 5 }, { "id": 3585, "url": "https://svs.gsfc.nasa.gov/3585/", "result_type": "Visualization", "release_date": "2009-03-16T00:00:00-04:00", "title": "Stereoscopic SeaWiFS Biosphere Global Rotation: 1997-2006", "description": "The SeaWiFS instrument aboard the SeaStar satellite has been collecting ocean data since 1997. By monitoring the color of reflected light via satellite, scientists can determine how successfully plant life is photosynthesizing. A measurement of photosynthesis is essentially a measurement of successful growth, and growth means successful use of ambient carbon.This animation represents nearly a decade's worth of data taken by the SeaWiFS instrument, showing the abundance of life in the sea. This time period repeats twice during the animation. Dark blue represents warmer areas where there is little life due to lack of nutrients, and greens and reds represent cooler nutrient-rich areas. The nutrient-rich areas include coastal regions where cold water rises from the sea floor bringing nutrients along and areas at the mouths of rivers where the rivers have brought nutrients into the ocean from the land. The nutrient-rich waters contribute to some of the oxygen-poor pockets of the seas called dead zones.This visualization is a stereoscopic version of animation entry: #3420:SeaWiFS Biosphere Global Rotation from 1997 to 2006 || ", "hits": 18 }, { "id": 3515, "url": "https://svs.gsfc.nasa.gov/3515/", "result_type": "Visualization", "release_date": "2008-07-10T00:00:00-04:00", "title": "Biosphere Data Over Northeastern United States", "description": "The SeaWiFS instrument aboard the SeaStar satellite has been collecting ocean data since 1997. By monitoring the color of reflected light via satellite, scientists can determine how successfully plant life is photosynthesizing. A measurement of photosynthesis is essentially a measurement of successful growth, and growth means successful use of ambient carbon. This animation represents nearly a decade's worth of data taken by the SeaWiFS instrument, showing the abundance of life in the sea and along the north eastern seaboard of the United States. Dark blue represents warmer areas where there is little life due to lack of nutrients, and greens and reds represent cooler nutrient-rich areas. The nutrient-rich areas include coastal regions where cold water rises from the sea floor bringing nutrients along and areas at the mouths of rivers where the rivers have brought nutrients into the ocean from the land. The nutrient-rich waters contribute to some of the oxygen-poor pockets of the seas called dead zones. || ", "hits": 9 }, { "id": 3516, "url": "https://svs.gsfc.nasa.gov/3516/", "result_type": "Visualization", "release_date": "2008-07-10T00:00:00-04:00", "title": "Biosphere Data Over United States Eastern Seaboard", "description": "The SeaWiFS instrument aboard the SeaStar satellite has been collecting ocean data since 1997. By monitoring the color of reflected light via satellite, scientists can determine how successfully plant life is photosynthesizing. A measurement of photosynthesis is essentially a measurement of successful growth, and growth means successful use of ambient carbon. This animation represents nearly a decade's worth of data taken by the SeaWiFS instrument, showing the abundance of life in the sea and along the eastern seaboard of the United States. Dark blue represents warmer areas where there is little life due to lack of nutrients, and greens and reds represent cooler nutrient-rich areas. The nutrient-rich areas include coastal regions where cold water rises from the sea floor bringing nutrients along and areas at the mouths of rivers where the rivers have brought nutrients into the ocean from the land. The nutrient-rich waters contribute to some of the oxygen-poor pockets of the seas called dead zones. || ", "hits": 16 }, { "id": 3524, "url": "https://svs.gsfc.nasa.gov/3524/", "result_type": "Visualization", "release_date": "2008-07-10T00:00:00-04:00", "title": "Biosphere Data Over Northeastern United States (Land Masked)", "description": "The SeaWiFS instrument aboard the SeaStar satellite has been collecting ocean data since 1997. By monitoring the color of reflected light via satellite, scientists can determine how successfully plant life is photosynthesizing. A measurement of photosynthesis is essentially a measurement of successful growth, and growth means successful use of ambient carbon. This animation represents nearly a decade's worth of data taken by the SeaWiFS instrument, showing the abundance of life in the sea and along the north eastern seaboard of the United States. Dark blue represents warmer areas where there is little life due to lack of nutrients, and greens and reds represent cooler nutrient-rich areas. The nutrient-rich areas include coastal regions where cold water rises from the sea floor bringing nutrients along and areas at the mouths of rivers where the rivers have brought nutrients into the ocean from the land. The nutrient-rich waters contribute to some of the oxygen-poor pockets of the seas called dead zones. || ", "hits": 8 }, { "id": 3526, "url": "https://svs.gsfc.nasa.gov/3526/", "result_type": "Visualization", "release_date": "2008-07-10T00:00:00-04:00", "title": "Biosphere Data Over United States Eastern Seaboard (Land Masked)", "description": "The SeaWiFS instrument aboard the SeaStar satellite has been collecting ocean data since 1997. By monitoring the color of reflected light via satellite, scientists can determine how successfully plant life is photosynthesizing. A measurement of photosynthesis is essentially a measurement of successful growth, and growth means successful use of ambient carbon. This animation represents nearly a decade's worth of data taken by the SeaWiFS instrument, showing the abundance of life in the sea and along the eastern seaboard of the United States. Dark blue represents warmer areas where there is little life due to lack of nutrients, and greens and reds represent cooler nutrient-rich areas. The nutrient-rich areas include coastal regions where cold water rises from the sea floor bringing nutrients along and areas at the mouths of rivers where the rivers have brought nutrients into the ocean from the land. The nutrient-rich waters contribute to some of the oxygen-poor pockets of the seas called dead zones. || ", "hits": 4 }, { "id": 3527, "url": "https://svs.gsfc.nasa.gov/3527/", "result_type": "Visualization", "release_date": "2008-07-10T00:00:00-04:00", "title": "Biosphere Data Across the United States Western Seaboard (Land Masked)", "description": "The SeaWiFS instrument aboard the SeaStar satellite has been collecting ocean data since 1997. By monitoring the color of reflected light via satellite, scientists can determine how successfully plant life is photosynthesizing. A measurement of photosynthesis is essentially a measurement of successful growth, and growth means successful use of ambient carbon. This animation represents nearly a decade's worth of data taken by the SeaWiFS instrument, showing the abundance of life in the sea and along the Western seaboard of the United States. Dark blue represents warmer areas where there is little life due to lack of nutrients, and greens and reds represent cooler nutrient-rich areas. The nutrient-rich areas include coastal regions where cold water rises from the sea floor bringing nutrients along and areas at the mouths of rivers where the rivers have brought nutrients into the ocean from the land. The nutrient-rich waters contribute to some of the oxygen-poor pockets of the seas called dead zones. || ", "hits": 6 }, { "id": 3528, "url": "https://svs.gsfc.nasa.gov/3528/", "result_type": "Visualization", "release_date": "2008-07-10T00:00:00-04:00", "title": "Biosphere Data Around the Gulf of Mexico (Land Masked)", "description": "The SeaWiFS instrument aboard the SeaStar satellite has been collecting ocean data since 1997. By monitoring the color of reflected light via satellite, scientists can determine how successfully plant life is photosynthesizing. A measurement of photosynthesis is essentially a measurement of successful growth, and growth means successful use of ambient carbon. This animation represents nearly a decade's worth of data taken by the SeaWiFS instrument, showing the abundance of life in the sea in and around the Gulf of Mexico. Dark blue represents warmer areas where there is little life due to lack of nutrients, and greens and reds represent cooler nutrient-rich areas. The nutrient-rich areas include coastal regions where cold water rises from the sea floor bringing nutrients along and areas at the mouths of rivers where the rivers have brought nutrients into the ocean from the land. The nutrient-rich waters contribute to some of the oxygen-poor pockets of the seas called dead zones. || ", "hits": 12 }, { "id": 3544, "url": "https://svs.gsfc.nasa.gov/3544/", "result_type": "Visualization", "release_date": "2008-07-10T00:00:00-04:00", "title": "Biosphere Data Around the Costa Rica Dome (Land Masked)", "description": "The SeaWiFS instrument aboard the SeaStar satellite has been collecting ocean data since 1997. By monitoring the color of reflected light via satellite, scientists can determine how successfully plant life is photosynthesizing. A measurement of photosynthesis is essentially a measurement of successful growth, and growth means successful use of ambient carbon.Dark blue represents warmer areas where there is little life due to lack of nutrients, and greens and reds represent cooler nutrient-rich areas. The nutrient-rich areas include coastal regions where cold water rises from the sea floor bringing nutrients along and areas at the mouths of rivers where the rivers have brought nutrients into the ocean from the land. The nutrient-rich waters contribute to some of the oxygen-poor pockets of the seas called dead zones. || ", "hits": 18 }, { "id": 3517, "url": "https://svs.gsfc.nasa.gov/3517/", "result_type": "Visualization", "release_date": "2008-06-25T00:00:00-04:00", "title": "Biosphere Data Across the United States Western Seaboard", "description": "The SeaWiFS instrument aboard the SeaStar satellite has been collecting ocean data since 1997. By monitoring the color of reflected light via satellite, scientists can determine how successfully plant life is photosynthesizing. A measurement of photosynthesis is essentially a measurement of successful growth, and growth means successful use of ambient carbon. This animation represents nearly a decade's worth of data taken by the SeaWiFS instrument, showing the abundance of life in the sea and along the Western seaboard of the United States. Dark blue represents warmer areas where there is little life due to lack of nutrients, and greens and reds represent cooler nutrient-rich areas. The nutrient-rich areas include coastal regions where cold water rises from the sea floor bringing nutrients along and areas at the mouths of rivers where the rivers have brought nutrients into the ocean from the land. The nutrient-rich waters contribute to some of the oxygen-poor pockets of the seas called dead zones. || ", "hits": 8 }, { "id": 3518, "url": "https://svs.gsfc.nasa.gov/3518/", "result_type": "Visualization", "release_date": "2008-06-25T00:00:00-04:00", "title": "Biosphere Data Around the Gulf of Mexico", "description": "The SeaWiFS instrument aboard the SeaStar satellite has been collecting ocean data since 1997. By monitoring the color of reflected light via satellite, scientists can determine how successfully plant life is photosynthesizing. A measurement of photosynthesis is essentially a measurement of successful growth, and growth means successful use of ambient carbon. This animation represents nearly a decade's worth of data taken by the SeaWiFS instrument, showing the abundance of life in the sea in and around the Gulf of Mexico. Dark blue represents warmer areas where there is little life due to lack of nutrients, and greens and reds represent cooler nutrient-rich areas. The nutrient-rich areas include coastal regions where cold water rises from the sea floor bringing nutrients along and areas at the mouths of rivers where the rivers have brought nutrients into the ocean from the land. The nutrient-rich waters contribute to some of the oxygen-poor pockets of the seas called dead zones. || ", "hits": 22 }, { "id": 3066, "url": "https://svs.gsfc.nasa.gov/3066/", "result_type": "Visualization", "release_date": "2004-12-13T12:00:00-05:00", "title": "Aura/OMI Ozone Hole from September 12, 2004 to November 15,2004", "description": "Data from NASA satellites establishes a 40 year record of stratospheric ozone measurements. The stratospheric ozone layer shields life on Earth from harmful solar ultraviolet (UV) radiation. Research shows that excess exposure to UV radiation causes skin cancer and eye problems and impacts plant growth. Global stratospheric ozone has decreased by 3 percent globally between 1980 and 2000 and has thinned by 50 percent over Antarctica in winter and spring. Depletion of the ozone layer allows more UV radiation to reach the Earth's surface. This animation shows the ozone layer blocking harmful UV radiation from the Earth's surface. The hole in the ozone is seen in purple. || ", "hits": 47 }, { "id": 3067, "url": "https://svs.gsfc.nasa.gov/3067/", "result_type": "Visualization", "release_date": "2004-12-13T12:00:00-05:00", "title": "Aura/OMI Ozone Hole from September 12, 2004 to November 15, 2004 with Polar Vortex Demarcation", "description": "Data from NASA satellites establishes a 40-year record of stratospheric ozone measurements. The stratospheric ozone layer shields life on Earth from harmful solar ultraviolet (UV) radiation. Research shows that excess exposure to UV radiation causes skin cancer and eye problems and impacts plant growth. Global stratospheric ozone has decreased by 3 percent globally between 1980 and 2000 and has thinned by 50 percent over Antarctica in winter and spring. Depletion of the ozone layer allows more UV radiation to reach the Earth's surface.This animation shows the ozone layer blocking harmful UV radiation from the Earth's surface. The hole in the ozone is seen in purple. The location, size, and shape of the polar vortex is derived from potential vorticity data, PV. The PV, shown in white at 550 degrees Kelvin, is an atmospheric regional event that isolates polar air from the air at lower latitudes, producing conditions favorable for wintertime polar ozone depletion. The animation shows that most of the low-temperature and chemically-perturbed region is confined within the polar vortex during the Antarctic winter. || ", "hits": 25 }, { "id": 2435, "url": "https://svs.gsfc.nasa.gov/2435/", "result_type": "Visualization", "release_date": "2002-05-09T12:00:00-04:00", "title": "IMAGE/LENA Observes Oxygen Atoms in the near-Earth Environment", "description": "Electrically charged oxygen atoms (green) are ejected into the magnetosphere due to heating in the ionosphere. The red 'thermometer' displays the intensity of the solar wind (dynamic pressure) measured by the Geotail spacecraft. The yellow 'thermometer' represents the source intensity or hydrogen counts as measured by IMAGE/LENA. || ", "hits": 21 }, { "id": 2444, "url": "https://svs.gsfc.nasa.gov/2444/", "result_type": "Visualization", "release_date": "2002-05-09T12:00:00-04:00", "title": "IMAGE/HENA Views Oxygen in the Magnetosphere (Rainbow Version)", "description": "IMAGE/HENA observes the oxygen ions, expelled from the Earth's atmosphere by the solar wind, return to the polar regions via the magnetic field. || Movie of IMAGE-HENA data using a rainbow color table for oxygen intensity. || a002444.00100_print.png (720x480) [373.3 KB] || HENArainbow_pre.jpg (320x288) [13.5 KB] || a002444.webmhd.webm (960x540) [8.1 MB] || a002444.dv (720x480) [112.3 MB] || HENArainbow.mpg (320x288) [942.9 KB] || ", "hits": 21 }, { "id": 2445, "url": "https://svs.gsfc.nasa.gov/2445/", "result_type": "Visualization", "release_date": "2002-05-09T12:00:00-04:00", "title": "IMAGE/HENA Views Oxygen in the Magnetosphere (Blue Version)", "description": "IMAGE/HENA observes the oxygen ions, expelled from the Earth's atmosphere by the solar wind, return to the polar regions via the magnetic field. || Movie of IMAGE-HENA data using a blue color table for oxygen intensity. || a002445.00010_print.png (720x480) [371.4 KB] || HENAblue_pre.jpg (320x320) [7.9 KB] || a002445.webmhd.webm (960x540) [8.1 MB] || a002445.dv (720x480) [153.6 MB] || HENAblue.mpg (320x320) [1.3 MB] || ", "hits": 17 }, { "id": 823, "url": "https://svs.gsfc.nasa.gov/823/", "result_type": "Visualization", "release_date": "1999-04-09T12:00:00-04:00", "title": "Chemical Model Animation of O2 being Broken Up and Reforming as O3", "description": "Ozone is formed when high energy ultra-violet radiation from the sun breaks apart molecular oxygen. An oxygen atom then combines with an oxygen molecule producing a new molecule with three atoms of oxygen, ozone. || ", "hits": 438 }, { "id": 824, "url": "https://svs.gsfc.nasa.gov/824/", "result_type": "Visualization", "release_date": "1999-04-09T12:00:00-04:00", "title": "Chemical Model Animation of O3 Absorbing Low-energy UV", "description": "Ozone is a strong absorber of lower energy ultraviolet radiation which can kill living organisms. This radiation is absorbed by the ozone layer when it breaks the ozone bonds. An oxygen atom is released, but the atom quickly re-combines with another oxygen molecule to regenerate ozone. || ", "hits": 182 }, { "id": 825, "url": "https://svs.gsfc.nasa.gov/825/", "result_type": "Visualization", "release_date": "1999-04-09T12:00:00-04:00", "title": "Chemical Model Animation of O3 Losing an Oxygen Atom to a Radical", "description": "Ozone is very reactive. It easily loses the third oxygen atom in the presence of other highly reactive compounds called radicals, which contain chlorine, hydrogen, nitrogen, or bromine. Minute quantities of these radicals can cause large decreases in ozone because they are not consumed in the reaction. This is called a catalytic cycle. || ", "hits": 133 }, { "id": 44, "url": "https://svs.gsfc.nasa.gov/44/", "result_type": "Visualization", "release_date": "1994-02-12T12:00:00-05:00", "title": "Rayleigh-Taylor Instabilities in Supernovae Explosions: Oxygen Mass Fraction", "description": "The following calculation shows the development and evolution of Rayleigh-Taylor instabilities which develop behind the supernova blast wave on a time scale of a few hours. The initial model was chosen to provide a good representation for the progenitor star for Supernova 1987A. The calculation was performed using the Piecewise-Parabolic Method for hydrodynamics on a two-dimensional spherical grid with rotational symmetry about the vertical axis and equatorial symmetry about the horizontal axis.The grid contained 800 zones in the radial direction and 400 zones in the angular diraction and was allowed to expand homologously with the explosion to maintain as high a resolution as possible in the unstable layer during the evolution. The following sequences show the evolution of the density distribution as well as the distribution of hydrogen, helium, and oxygen within the ejecta to illustrate the amount of mixing caused by the instability. Each sequence shows the evolution in two reference frames.In the first frame, the size of the plot expands with time as the grid expands. For the second reference frame, the size of the plot is kept fixed with the time so that more detail can be seen in the unstable layer. || ", "hits": 12 }, { "id": 45, "url": "https://svs.gsfc.nasa.gov/45/", "result_type": "Visualization", "release_date": "1994-02-12T12:00:00-05:00", "title": "Rayleigh-Taylor Instabilities in Supernovae Explosions: Partial Density of Oxygen", "description": "The following calculation shows the development and evolution of Rayleigh-Taylor instabilities which develop behind the supernova blast wave on a time scale of a few hours. The initial model was chosen to provide a good representation for the progenitor star for Supernova 1987A. The calculation was performed using the Piecewise-Parabolic Method for hydrodynamics on a two-dimensional spherical grid with rotational symmetry about the vertical axis and equatorial symmetry about the horizontal axis.The grid contained 800 zones in the radial direction and 400 zones in the angular diraction and was allowed to expand homologously with the explosion to maintain as high a resolution as possible in the unstable layer during the evolution. The following sequences show the evolution of the density distribution as well as the distribution of hydrogen, helium, and oxygen within the ejecta to illustrate the amount of mixing caused by the instability. Each sequence shows the evolution in two reference frames.In the first frame, the size of the plot expands with time as the grid expands. For the second reference frame, the size of the plot is kept fixed with the time so that more detail can be seen in the unstable layer. || ", "hits": 51 } ] }