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 ...

Thanks to the Mars Odyssey probe and 21,000 high-resolutions photographs it took of the planet’s surface, we now have the best map ever made of Mars – and you can check it out online right now! The ...

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, ...

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