Scientists have known for some time that Mars once had lots and lots of water — in fact, some of it is still there — but exactly where it existed on the planet has been pretty difficult to figure out thanks to billions of years of surface erosion. Now, NASA’s Mars Reconnaissance Orbiter has discovered one place on the red planet that held a whole bunch of the life-giving liquid: an incredibly massive lake that, during its peak, held ten times the amount of water of all the Great Lakes, combined.
It’s an incredible discovery, and one that could help inform future exploration of Mars in the hopes of finding evidence that life once existed there. The idea that Mars was one a life-giving planet much like our own is one that has tantalized scientists for a long, long time, and if they ever hope to prove it, they now have a promising lead on where to start looking.
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