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.

Arsia Mons, an ancient Martian volcano, was captured before dawn on May 2, 2025, by NASA’s 2001 Mars Odyssey orbiter while the spacecraft was studying the Red Planet’s atmosphere, which ...

The photograph, snapped at dawn by NASA’s 2001 Mars Odyssey orbiter, offers an ethereal view of Arsia Mons, a massive Martian volcano rising through the planet’s early morning cloud cover.

NASA has captured a breathtaking image of Arsia Mons, one of Mars' most massive volcanoes, towering nearly twice the height of any mountain on Earth. Captured at dawn by the 2001 Mars Odyssey ...

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 ...

This image shows a spectacular zone of collapse features on the southern flank of the giant shield volcano Arsia Mons (located at 239°E longitude and 10°S latitude, see the Mars map image).

This digital-image mosaic of Mars' Tharsis plateau shows the extinct volcano Arsia Mons. It was assembled from images that the Viking 1 Orbiter took during its 1976-1980 working life at Mars.

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.

It must have been a pretty remarkable eruption, too, as the volcano is an incredible 270 miles wide and 12 miles high. Mauna Loa, Earth's largest volcano, is only 6.3 miles high and 75 miles across.

Arsia Mons is the southernmost of the three volcanoes that make up Tharsis Montes, shown in the center of this cropped topographic map of Mars. Olympus Mons, the solar system’s largest volcano ...

This digital-image mosaic of Mars' Tharsis plateau shows the extinct volcano Arsia Mons. It was assembled from images that the Viking 1 Orbiter took during its 1976 to 1980 working life at Mars.