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Tag Archives: volatiles
How do impacts make Mars central-pit craters?
[Editor’s note: From a paper by Samantha Peel and two co-authors recently published in the Journal of Geophysical Research.] Formation of central pits in impact craters on Mars: A statistical investigation of proposed mechanisms • Formation mechanisms for central pits … Continue reading
HiRISE: Pits in Hale Crater ejecta
The pits visible here aren’t impact craters. The material they’re embedded into is ejecta (stuff thrown out of an impact crater when it forms) from a large crater called Hale which is not seen in this image. Substances called “volatiles” … Continue reading
Posted in Reports
Tagged ejecta, Hale Crater, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, pit craters, University of Arizona, volatiles
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HiRISE: Volatiles and gullies
Beautiful Mars series. Volatiles and gullies. More Beautiful Mars images.
Posted in Reports
Tagged Beautiful Mars, gullies, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, mass wasting, MRO, NASA, University of Arizona, volatiles, water
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Pitted deposits in Mars craters point to subsurface ice
Studies of pitted deposits in crater floors appear to indicate that subsurface ice has been more widespread on Mars than previously thought. That’s the conclusion of a team of reseachers led by Livio Tornabene (University of Western Ontario), who reported … Continue reading
What turned off the Martian magnetic field?
For roughly the first 500 to 800 million years of its existence, Mars had a magnetic field generated by a natural internal dynamo. This was powered by convection currents in the planet’s molten iron core, which operated vigorously as they … Continue reading
Posted in Reports
Tagged convection, core, core dynamo, degassing, dynamo, magnetic field, mantle, volatiles, volcanos
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