LA CAÑADA FLINTRIDGE - Scientists have found ample evidence of one of the necessary elements for life on the Red Planet - water - but astrogeologists have discovered more evidence of another necessary element: shelter.
Astrogeologists from the U.S. Geological Survey recently found evidence of a cave system formed by lava flows just under Mars' surface. Caves like these that could hold clues to whether life existed on the planet and could shelter future human explorers on Mars, according to Glen Cushing, a USGS physicist.
"Caves pretty much have a pristine environment that's not affected by what goes on up on the surface," Cushing said. "Future explorers would be able to take advantage of this."