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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