Sol 22 and after, Digging in Wonderland |
Sol 22 and after, Digging in Wonderland |
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#301
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Solar System Cartographer ![]() ![]() ![]() ![]() Group: Members Posts: 10196 Joined: 5-April 05 From: Canada Member No.: 227 ![]() |
Here's a Sol 22 image of the new trenching area at the extreme right edge of the work area. I brightened the shadow to show the whole trench.
Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PD: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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#302
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![]() The Poet Dude ![]() ![]() ![]() ![]() Group: Moderator Posts: 5551 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60 ![]() |
Surely a thin atmosphere means there's more likelyhood of meteorites, large or small, making it to the surface?
Anyway, back to the picture I wanted opinions on... ![]() -------------------- |
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#303
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![]() Senior Member ![]() ![]() ![]() ![]() Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 ![]() |
Surely a thin atmosphere means there's more likelyhood of meteorites, large or small, making it to the surface? If it was that thin, landers wouldn't need heatshields, would they? Remember that on Earth, meteors burn up IIRC at heights of around 100-80 km, which is comparable in pressure (not sure about actual density which is what really matters) to Martian surface pressure. Martian atmospheric scale height is higher than Earth's so the density drops off slower with altitude. A typical meteorite will hit Mars at a higher terminal velocity probably, but it will still ablate away considerably. The question is how small a meteorite can reach ground on Mars... -------------------- |
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