The abyss
Mars Express: New images reveal the depths of the red planet's largest canyon
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Mars is a planet of extremes.
Not only does it have the tallest known volcano in the Solar System, but it also has the deepest canyon — plunging miles further than any cavern on Earth.
ESA/DLR/FU Berlin
This week, the European Space Agency released new images of one of the deepest regions on the planet from its Mars Express orbiter.
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