The abyss

Mars Express: New images reveal the depths of the red planet's largest canyon

Originally Published: 
Canyon on Mars
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.

NASA/JPL-Caltech/Arizona State University


This week, the European Space Agency released new images of one of the deepest regions on the planet from its Mars Express orbiter.