Curiosity mars rover riverbed

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NASA's Curiosity rover has turned up some of the best evidence yet that there were once bodies of water on Mars.

Not just another rock: Curiosity rover finds specimen that resembles earthly igneous rocks, never before observed on Mars

The Mars rover Curiosity has stumbled on veins that indicate the presence of water in the red planet's Yellowknife Bay.

This set of images compares the Link outcrop of rocks on Mars (left) with similar rocks seen on Earth (right).

NASA/JPL-Caltech/MSSS and PSI, from NASA’s Curiosity Mars Rover Facebook page

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