Mars-Orbiting Spacecraft Captures ‘Snaking Scar’ Across the Base of Enormous Volcano | News World

A high-resolution camera system aboard the Mars Express Orbiter has returned stunning images of “snaking” gashes across the foot of Arsia Mons, one of the red planet’s massive volcanoes.

The European Space Agency (ESA) clocked Mars’ deep, uneven scar at roughly 373 miles long (600 km) — making it around one-and-a-third times the length of the Grand Canyon. Humans first documented the feature in 1930, and formally dubbed it Aganippe Fossa 46 years later.

“The structure, named after a spring nymph in Greek mythology, puzzles even today’s experts,” said the German Aerospace Center, which developed the stereo camera aboard the 21-year-old Mars Express spacecraft. The agency added, “Some theories suggest that the trench is tectonic in origin, while others claim that volcanic veins formed during a late period of activity,” creating scar-like depressions across both rocky and gently sloping terrain.

For its part, the ESA said Aganippe…


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