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Tag Archives: impacts
Asteroids from a martian mega-impact?
Like evidence left at a crime scene, the mineral olivine may be the clue that helps scientists piece together Mars’s possibly violent history. Could a long-ago giant impact have flung pieces of Mars throughout our inner solar system? Two researchers … Continue reading
Posted in Reports
Tagged asteroids, giant impacts, impacts, Mars trojan asteroids, olivine
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THEMIS: A peppering of small craters
THEMIS Image of the Day, April 4, 2018. This field of small dark craters is located in southern Elysium Planitia. The dark appearance against the surrounding lava flows suggests that the craters post-date the lava flows. The small “tails” near … Continue reading
Posted in Reports
Tagged Arizona State University, ASU, Elysium Planitia, impacts, lava flows, Mars Odyssey, NASA, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System, volcanics, wind streaks
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THEMIS: Yuty Crater ejecta
THEMIS Image of the Day, March 26, 2018. Off the image to the right is Yuty Crater, located between Simud and Tiu Valles. The crater ejcta forms the large lobes along the right side of this VIS image. This type … Continue reading
Posted in Reports
Tagged Arizona State University, ASU, craters, fluidized ejecta, ground ice, groundwater, impacts, lobate debris aprons, Mars Odyssey, NASA, Simud Valles, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System, Tiu Valles, Yuty Crater
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HiRISE: Crater rim layers, rubble, and gullies
This is a close view of the rim and upper wall of an impact crater on the Martian surface. The layers in enhanced color are exposed subsurface strata that are relatively resistant to erosion. Boulder-like rubble beyond the crater rim … Continue reading
Posted in Reports
Tagged gullies, High Resolution Imaging Science Experiment, HiRISE, impacts, layers, Mars Reconnaissance Orbiter, MRO, NASA, University of Arizona
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HiRISE: Mojave Crater far-flung impact ejecta
Distal reaches of Mojave Crater impact ejecta. Beautiful Mars series.
Posted in Reports
Tagged Beautiful Mars, ejecta, High Resolution Imaging Science Experiment, HiRISE, impacts, Mars Reconnaissance Orbiter, Mojave Crater, MRO, NASA, University of Arizona
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HiRISE: Layers on rim of southern impact crater
Swoop! – Layers on the rim of an impact crater in the southern region of Mars. Beautiful Mars series.
Posted in Reports
Tagged Beautiful Mars, craters, High Resolution Imaging Science Experiment, HiRISE, impacts, layers, Mars Reconnaissance Orbiter, MRO, NASA, University of Arizona
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HiRISE: Small, fresh, and martian
Small, fresh, and martian – By “fresh,” (and sometimes “recent”), we are talking in geological terms only. Beautiful Mars series.
Posted in Reports
Tagged Beautiful Mars, binary craters, High Resolution Imaging Science Experiment, HiRISE, impacts, Mars Reconnaissance Orbiter, Memnonia Fossae, MRO, NASA, University of Arizona
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HiRISE: South polar pit or an impact crater?
It is late summer in the Southern hemisphere, so the Sun is low in the sky and subtle topography is accentuated in orbital images. We see many shallow pits in the bright residual cap of carbon dioxide ice (also called … Continue reading
Posted in Reports
Tagged collapse pits, High Resolution Imaging Science Experiment, HiRISE, impacts, Mars Reconnaissance Orbiter, MRO, NASA, Swiss-cheese terrain, University of Arizona
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Tornado-like winds from impacts scoured surface
Plumes of vapor generated by ancient impacts on Mars created tornado-like winds possibly swirling at more than 500 miles per hour, which explain mysterious streaks seen near large impact craters on the Martian surface. In looking at NASA images of … Continue reading
THEMIS: Rough rim on Horowitz Crater
THEMIS Image of the Day, May 4, 2017. Today’s false color image shows part of the northern rim of Horowitz Crater, which is located in Terra Cimmeria. The THEMIS VIS camera contains 5 filters. The data from different filters can … Continue reading
Posted in Reports
Tagged Arizona State University, ASU, Horowitz Crater, impacts, Mars Odyssey, NASA, Terra Cimmeria, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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