Originally published at: http://www.howtogeek.com/177668/signs-of-a-large-martian-lake/
With each passing month, the Curiosity Rover sends back more awesome data, helping us learn more of Mars’ many secrets. The latest batch of data has revealed something quite fascinating about Gale Crater…it appears to have been the site of a large lake once upon a time. Want to know more? Then make sure to watch today’s fascinating video from YouTube channel SciShow!