New answers tagged mars
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This is the latest catalogue from seismic events recorded by InSight: Mars Seismic Catalogue, InSight Mission; V5 2021-01-04. This report includes seismic events up to October 12, 2020. These documents get periodicaly published, so keep an eye on the page pointed out by @planetmaker on the comments. The robot has measured a total of 1759 Marsquake events as ...
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Just like a cold winters night on Earth does not guarantee snow, so does a cold Mars not guarantee ice everywhere.
In order for ice or snow to form, the moisture that is later solidifying has to be available at the cold location. Moisture in this case is $CO_2$ with traces of water, leading to an ice cap made of $CO_2$-ice, with a ring of $H_2O$-ice '...
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The image in question appears to come down from the rover "down-look" camera. Here is a raw image of that, while this is a raw image taken next to it (you can line up the crater part in the left of the first with the main crater in the second).
While both list Sol 4 as the acquisition date, they list Feb. 23 and Feb. 24 as the Earth dates, while ...
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Philip R. Christensen wrote an article back in 1986 called Regional dust deposits on Mars: Physical properties, age, and history. The abstract says
Dust deposited during global storms is subsequently removed only from dark regions, resulting in a net accumulation in the low‐inertia, bright regions. The thickness of these current dust deposits is 0.1–2 m.
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