Arsia Mons, though not as tall as Olympus Mons, dominates the Martian landscape with its 12-mile (20 km) height. Located in the Tharsis Montes volcanic region, this volcano is often shrouded in ...

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 ...

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.

In it, Arsia Mons stands 12 miles (20 kilometers) high and measures 70 miles (450 km) in diameter. For comparison, Earth’s tallest volcano, Mauna Loa, stands 6 miles (9 km) above the seafloor ...

Panoramic image of Arsia Mons captured by NASA's 2001 Mars Odyssey orbiter on May 2, 2025. Credit: NASA/JPL-Caltech/ASU Odyssey took the photo using THEMIS, its Thermal Emission Imaging System.

Olympus Mons sits on the same volcanic “bulge” as the three volcanoes of Tharsis Montes — Ascraeus Mons, Pavonis Mons, and Arsia Mons.

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 ...