About Lori Fenton
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Exoplanets
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19
June 19, 2017
Published by
lfenton
at
June 19, 2017
Categories
HiRISE images
The real tetrahedrons of Mars
A Piece of Mars: The real tetrahedrons of Mars are dunes, built by winds blowing sand from more than one direction. This 0.5×0.5 km (0.31×0.31 mi) area shows a dune formed from two winds that are about 90 degrees apart:
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