Mars colonists could use caves for protection from potentially deadly cosmic rays streaming down from space. (NASA / October 24, 2009)From The L.A. Times:
Images of ancient lava flows from the Arsia Mons volcano suggest an extensive system near the Red Planet's equator. Caves could one day aid space explorers.
Caves were some of the earliest refuges for human beings on Earth. Could the same be true for future pioneers on Mars?
Glen Cushing, a space scientist with the U.S. Geological Survey, thinks so. He said he has found evidence of an extensive cave system among ancient volcanoes at Mars' equator.
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