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Tag Archives: impacts
HiRISE: Crater in the Zarqa Valles channel
A crater in the inner channel of Zarqa Valles. We target here a crater of diameter close to 1 kilometer that impacted in an inner channel within a valley with potential sedimentary deposits, in the region of Libya Montes. High … Continue reading
Posted in Reports
Tagged channel, High Resolution Imaging Science Experiment, HiPOD, HiRISE, HiRISE Picture of the Day, impacts, layered deposits, layers, Libya Montes, Mars Reconnaissance Orbiter, MRO, NASA, sedimentary deposits, University of Arizona, Zarqa Valles
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Asteroid impacts+hydrogen = recipe for Mars life
A new study reveals asteroid impacts on ancient Mars could have produced key ingredients for life if the Martian atmosphere was rich in hydrogen. An early hydrogen-rich atmosphere on Mars could also explain how the planet remained habitable after its … Continue reading
Posted in Reports
Tagged asteroid belt, asteroid impacts, bolide impacts, giant impacts, hydrogen, impacts, life, nitrates, nitrites, nitrogen
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THEMIS: Big impacts and little in Terra Cimmeria
THEMIS Image of the Day, March 13, 2019. This VIS image contains three craters. There is a quarter of the largest crater in the top half of the image, half of a smaller crater at the very top, and the … Continue reading
Posted in Reports
Tagged Arizona State University, ASU, ejecta, gullies, impact craters, impacts, Mars Odyssey, NASA, radial ejecta, Terra Cimmeria, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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Recently formed crater clusters on Mars
[Editor’s note: From a paper by Ingrid Daubar and three co-authors recently published in the Journal of Geophysical Research.] Recently Formed Crater Clusters on Mars • We report on properties of new dated crater clusters on Mars; most clusters in … Continue reading
Posted in Reports
Tagged crater clusters, cratering rate, impacts, multiple impacts, oblique impacts
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HiRISE: Recent impact site in Noachis Terra
This image shows a recent impact in Noachis Terra in the southern mid-latitudes of Mars. The impact occurred in dark-toned ejecta material from a degraded, 60-kilometer crater to the south. Rather than a single impact crater, we see multiple impacts … Continue reading
Posted in Reports
Tagged High Resolution Imaging Science Experiment, HiRISE, impact craters, impacts, Mars Reconnaissance Orbiter, MRO, multiple impacts, NASA, Noachis Terra, recent impacts, University of Arizona
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THEMIS: Out of round
THEMIS Image of the Day, January 21, 2018. This VIS image shows a group of craters in Terra Sirenum. The apparent youngest one is the center crater with the scalloped rim. Subsurface tectonic features like faults can interfere with crater … Continue reading
Posted in Reports
Tagged Arizona State University, ASU, craters, impacts, Mars Odyssey, NASA, oblique impacts, tectonics, Terra Sirenum, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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Phobos may have come from big impact on Mars
Spectral fingerprints of Phobos’ surface support an ancient big crash origin for the Martian moon. The weird shapes and colors of the tiny Martian moons Phobos and Deimos have inspired a long-standing debate about their origins. The dark faces of … Continue reading
HiRISE: New crater blues
New crater blues. This new impact was found by the Context Camera team who asked HiRISE to take a high-resolution image. They estimated the impact happened between January 2012 and September 2016, because they have a picture from the THEMIS … Continue reading
Posted in Reports
Tagged Beautiful Mars, fresh craters, High Resolution Imaging Science Experiment, HiRISE, impacts, Mars Reconnaissance Orbiter, MRO, NASA, University of Arizona
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THEMIS: Impact blast scars on crater rim
THEMIS Image of the Day, June 12, 2018. Today’s VIS image shows part of a crater located north of Hecates Tholus. The radial grooves in the ejecta blanket are still visible around the crater rim. There is also likely blast … Continue reading
Posted in Reports
Tagged Arizona State University, ASU, craters, Hecates Tholus, impact craters, impact processes, impacts, Mars Odyssey, NASA, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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THEMIS: Blast scour at Bonestell Crater
THEMIS Image of the Day, April 17, 2018. Bonestell Crater is a relatively young crater located in Acidalia Planitia. The grooved surface of the ejecta blanket is evident in this VIS image. The grooves were likely eroded by the outward … Continue reading
Posted in Reports
Tagged Acidalia Planitia, Arizona State University, ASU, Bonestell Crater, impacts, Mars Odyssey, NASA, radial ejecta, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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