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Questions tagged [geology]

Questions regarding surface features of celestial bodies.

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Eyes on Mars; are these craters mentioned or described in any paper or (scientific) article?

Credit: NASA/JPL/University of Arizona HiRISE ESP_025334_2035 For a closer view, click on the image, and then, click again. This pair of similar craters is located in the northern part of Oyama crater,...
Cornelis's user avatar
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Why is the along track resolution of the MRO's SHARAD limited to >300m?

I've been reading about the SHAllow RADar instrument on the Mars Reconnaissance Orbiter, but I am struggling to understand why the along track resolution of its radargrams is so large. As I ...
user201537's user avatar
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Why did the Apollo 16 crew wait until Station 8 to sample ray material from South Ray (instead of earlier during EVA 2)?

During EVA 2 on Apollo 16, the crew planned to sample material from an ejecta ray from South Ray crater at Station 8. Earlier during that EVA, the mission plan had them drive through a continuation of ...
olamarre's user avatar
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How does Curiosity's X-ray diffractometer work? Does it measure only one angle at a time or does it have an area detector?

Per this answer to Are quasicrystals common on the Moon and Mars?, Curiosity has an X-ray diffractometer. X-ray diffraction from 3D crystals can (begin to) be understood by embracing Bragg's law. A 3D ...
uhoh's user avatar
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Why are the heat sensor probes in HP3 probe spaced with reducing gap with depth?

The HP3 probe used for studying the geothermal features of Martian surface, hammers upto 5m deep and inserts a tether lined with heat sensor probes. This link shared earlier by @uhoh, is an ...
karthikeyan's user avatar
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Mars drill depth to discover Life

Curiosity has shown that Mars used to have persistent liquid water on the surface. (~3+ billion years ago.) IF life was around at that time, at what depth would we expect to find it? Without plate ...
MarsOneOrBust's user avatar
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Interpretation of mars rover images

I’ve been obsessed with the perseverance images, specially the images from the SHERLOC-WATSON system- the UV camera tricked out with racing stripes and fuzzy dice hanging from its rear-view mirror (...
Tom Smith's user avatar
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Theories Clarification

I attended a seminar and the presenter was discussing various theories to explain the strong magnetic anomalies on Mars as spotted from orbit. One theory was that the "Lithology is rich in ...
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Why Perseverance's landing ellipse straddled the cliffs in the river delta; why so ambivalent about the two different geologies?

The Perseverance landing site has now been named for Octavia E. Butler and from here there will be a meandering climb to get up on top of the "cliffs" that are in the delta. I think that ...
uhoh's user avatar
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