четверг, 1 ноября 2018 г.

Curving Ridges and PitsThis terrain is unusual for the South…


Curving Ridges and Pits


This terrain is unusual for the South Polar region of Mars, with a set of curved ridges of unknown origin.


Small pits are present, often concentrated on the ridges, that may have resulted from sublimation of ice.


NASA/JPL/University of Arizona


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