Oh don't be so hard on Buzz...guy is damn near 80 and doing pretty well considering that.
Anyways Mars has two moons Phobos and Deimos.
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Phobos
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Deimos
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On Phobos there is a strange protrusion:

Note the unusually long shadow compared to other structures, this indicates it is fairly tall but part of it is also the extreme angle of the light source. They can't measure the exact height because determing height from shadow length requires knowing the angle of the light source (ie the sun) and must assume a perfect sphere...as you can see above Phobos is not a perfect sphere so the calculations leave something to be desired. Estimates I have heard are between 280ft and 420ft. Either way it is intriguing.









