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Seismic readings of the interior of Mars strongly suggest large quantities of water buried 6 to 12 miles underground. When you purchase through links on our site, we may earn an affiliate commission.

There might be a hidden ocean's worth of liquid water below the surface of Mars, seismic evidence suggests. According to a new paper published April 25 in the journal National Science Review, ...

Liquid water once shaped the Martian landscape dramatically, carving valleys, filling lakes, and forming vast oceans. Billions of years ago, during Mars' early days known as the Noachian and Hesperian ...