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Results tagged with mars
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user 38448
Questions about the science or exploration of the planet Mars. See the tag wiki for related tags.
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How big is Mars as seen from Phobos?
If you want to know how much of mars you can see, you need the horizon formula https://sites.math.washington.edu/~conroy/m120-general/horizon.pdf
but if you just want to know the angle of mars in the sky … , it is a simple tangent formula:
tan theta = mars radius/ distance to center of mars …
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How big is Mars as seen from Phobos?
If I were standing on the surface of Phobos looking at Mars, how big would it appear in the sky? Would it be like one hand at arm's length? Or take up like a third of the sky? …