Known as Arsia Mons, the volcano dwarfs Earth’s tallest volcanoes. Odyssey snapped some photos of the volcano in May, which NASA released in June in a blog post. Start the day smarter. Get all the ...

But the reality is that it's been at least 10 million years since the formidable Arsia Mons erupted.It must have been a pretty remarkable eruption, too, as the volcano is an incredible 270 miles ...

Microbial life could potentially have thrived for a time at the foot of Arsia Mons, a giant volcano about twice as tall as Mt. Everest, while the dinosaurs were just coming into their own on Earth ...

Braided fluvial channels (inset) emerge from the edge of glacial deposits roughly 210 million years old on the martian volcano Arsia Mons, nearly twice as high as Mount Everest.

Arsia Mons is the southernmost volcano in a group of three massive Martian volcanoes known collectively as Tharsis Montes. Until now, the volcano’s history has remained a mystery.

Because of its cloud cover, Arsia Mons has been hard to photograph. This new image from NASA's 2001 Mars Odyssey orbiter gives a first-of-its kind view at the peak of the volcano.

Arsia Mons itself measures 435km (270 miles) in diameter and rises more than 9km (5.5 miles) above the surrounding plains. For context, the highest dormant volcano on Earth, Ojos del Salado on ...

In 2018, when Earthlings eyed the cloud, there was some internet speculation it indicated new volcanic activity on Mars, but that is not the case. According to NASA, Arsia Mons' last volcanic ...

The volcano Arsia Mons, while still active, was covered by an enormous glacier around 210 million years ago. The volcano Arsia Mons, while still active, ...

Volcanic activity in Arsia Mons — the southernmost member of the Tharsis Montes group — most likely peaked roughly 150 million years ago.