Olympus Mons, a shield volcano on Mars, is the largest volcano in the solar system, measuring approximately 370 miles in diameter and 26 kilometers in height. The formation of Olympus Mons and three ...

A NASA spacecraft that has been circling Mars for more than two decades has spotted something it never has before in well over 100,000 orbits of the Red Planet. On a morning horizon in May, the ...

The images, captured by the Mars Express orbiter, reveal the volcano's southeast flank with hundreds of overlapping lava ...

Sometimes, it's really hard to see the volcanoes for the rocks, especially if you're just a one-ton rover all alone in a remote crater on Mars. Nevertheless, a bump on the rim of Jezero Crater is ...

A dazzling image taken by NASA’s 2001 Mars Odyssey orbiter shows an unprecedented view of a 12-mile-high volcano poking through clouds at dawn on the Red Planet. Arsia Mons, which dwarfs Earth’s ...

Mars’s marred surface consists of craters, canyons, and mysterious formations that hint at a complex geological past. Scientists recently studied a tantalizing feature that could shed light on the ...

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 ...

This is important because it gives a more realistic sense of the chemical state of the gas before it’s released at the ...

New images from ESA's Mars Express reveal Olympus Mons' colossal scale and intriguing features. Frozen lava tongues cascade ...

A new look at an ancient volcanic blast on Mars suggests that the Red Planet was much more Earth-like billions of years ago, with abundant surface water and a relatively thick atmosphere, scientists ...