Geophysicists have discovered a gigantic hidden ocean beneath Mars' surface, and they say it could harbor life. The massive underground reservoir, discovered using seismic data taken by NASA's InSight Lander, contains enough liquid to cover the entire planet with a mile of water.
'Water is necessary for life as we know it,' study co-author Michael Manga said in a statement. 'I don't see why [the underground reservoir] is not a habitable environment. It's certainly true on Earth - deep, deep mines host life, the bottom of the ocean hosts life.'
'We haven't found any evidence for life on Mars, but at least we have identified a place that should, in principle, be able to sustain life,' Manga added.
Dried-up river channels, deltas and lake beds criss-cross Mars' surface, giving scientists ample evidence that water once existed in abundance on the surface of the barren planet.
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