Mars Orbiter Photographs Canyon Five Times Deeper Than Grand Canyon - ExtremeTech

The ESA didn't need a fancy new mission to snap these images either. You can thank the venerable Mars Express orbiter.

Mars is a world of extremes. Not only does it have the largest volcano in the solar system (Olympus Mons), but it’s also home to the deepest known canyon, called Valles Marineris. The European Space … [+2534 chars]

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