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Tag Archives: CO2 ice
HiRISE: Seasonal haloes and fractals
Seasonal haloes and fractals. In the spring, as the winter layer of dry ice covering the polar regions sublimates, there is a lot of action. The ice layer cracks and ruptures, and escaping gas lofts sand from the dunes above … Continue reading
Posted in Reports
Tagged Beautiful Mars, CO2 ice, dunes, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, sand, sand dunes, University of Arizona
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Martian winters are shaping the landscape
Researchers based millions of kilometres from Mars have unveiled new evidence for how contemporary features are formed on the Red Planet. Their innovative lab-based experiments on carbon dioxide (CO2) sublimation – the process by which a substance changes from a … Continue reading
HiRISE: Squiggles in Hellas Planitia
At around 2,200 kilometers in diameter, Hellas Planitia is the largest visible impact basin in the Solar System, and hosts the lowest elevations on Mars’ surface as well as a variety of landscapes. This image covers a small central portion … Continue reading
Posted in Reports
Tagged CO2 ice, dunes, dust devil tracks, Hellas Planitia, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, sand dunes, University of Arizona
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HiRISE: A world of snowy dunes
It is spring in the Northern hemisphere when we took this image. Over the winter, snow and ice have inexorably covered the dunes. Unlike on Earth, this snow and ice is carbon dioxide, better known to us as dry ice. … Continue reading
Posted in Reports
Tagged Beautiful Mars, CO2 frost, CO2 ice, dunes, High Resolution Imaging Science Experiment, HiRISE, ice, Mars Reconnaissance Orbiter, MRO, NASA, sand dunes, snow, University of Arizona
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HiRISE: Spider terrain
Spider terrain. Beautiful Mars series.
Posted in Reports
Tagged Beautiful Mars, CO2 ice, CO2 jets, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, south polar ice cap, spiders, University of Arizona
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THEMIS: South polar textures as local summer ends
THEMIS Image of the Day, June 8, 2017. This VIS image of the south pole was taken at the end of summer. Frost will soon start to form as the season transitions into fall. Fall in the southern hemisphere means … Continue reading
Posted in Reports
Tagged Arizona State University, ASU, CO2 frost, CO2 ice, frost, Mars Odyssey, NASA, south polar ice cap, south polar residual cap, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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HiRISE: Lace on Mars
Some seasonal ice on Mars is transparent so that the sunlight penetrates to the bottom of the ice. Heat from this sunlight can turn the ice directly into a gas in a process called sublimation and this gas can scour … Continue reading
Posted in Reports
Tagged CO2 ice, High Resolution Imaging Science Experiment, HiRISE, ice, Mars Reconnaissance Orbiter, MRO, NASA, University of Arizona
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Small troughs may grow from gas-jet ‘spiders’
Erosion-carved troughs that grow and branch during multiple Martian years may be infant versions of larger features known as Martian “spiders,” which are radially patterned channels found only in the south polar region of Mars. Researchers using NASA’s Mars Reconnaissance … Continue reading
Posted in Reports
Tagged CO2 ice, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, spiders, University of Arizona
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HiRISE: Fans on crater rims
Gas under pressure will choose an easy escape route. In this image, the terrain is covered with a seasonal layer of dry ice. The weak spots, for gas sublimating from the bottom of the seasonal ice layer to escape, appear … Continue reading
Posted in Reports
Tagged CO2 ice, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, south polar region, University of Arizona
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HiRISE: Coolest landscape on Mars or Earth
Many Martian landscapes contain features that are familiar to ones we find on Earth, like river valleys, cliffs, glaciers and volcanos. However, Mars has an exotic side too, with landscapes that are alien to Earthlings. This image shows one of … Continue reading
Posted in Reports
Tagged CO2 ice, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, south polar ice cap, University of Arizona
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