Dubbed the Aganippe Fossa, the 373-mile long crack in Mars' surface, is a graben — a "ditch-like groove with steep walls on either side."

Scientists are examining a mysterious giant scar stretching across Mars — and do not know how it got there. The incredible feature, longer than the 446km (227-mile) Grand Canyon at roughly 600km (373 miles), has been captured by the ESA spacecraft Mars Express.

Mars. It is one of our closest neighboring planets-and a planet that NASA hopes to send a manned space mission to in the 2030s. This … The post New images reveal giant scar on Mars in striking detail appeared first on BGR.

Aganippe Fossa stretches about 375 miles across the surface of Mars, making it longer than the 277-mile-long Grand Canyon.

Captured by the Mars Express orbiter's high-resolution stereo camera, the images capture a 600-kilometer-long (373-mile-long) scar on Mars' surface.

New photos from the European Space Agency's Mars Express orbiter give us our best look yet at a giant ravine on the Red Planet. The dark "scar" was likely birthed by a gigantic blob of magma hidden beneath a massive nearby volcano millions of years ago.

A fascinating feature takes center stage in this new image from ESA’s Mars Express: a dark, uneven scar slicing through marbled ground at the foot of a giant volcano. This scar, known as Aganippe Fossa,

A scar has been spotted on Mars that's bigger in size than the Grand Canyon, according to the European Space Agency (ESA). Called Aganippe Fossa, the 600km-long scar is dark and uneven; it slices through the marbled ground at the bottom of a volcano.