Olympus Mons on Mars is the tallest mountain in the solar system, rising an astonishing 21 kilometers high, nearly two and a half times taller than Mount Everest. But its true scale isn’t just about ...

Mars Express returned this view of the complex caldera at the summit of Olympus Mons on Mars. The volcano is the tallest in the solar system, rising to an average elevation of 13 miles (22 ...

HiRISE is not able to capture the entire caldera at the summit of Olympus Mons, so we try to get as many images as possible to create a potential mosaic. This image shows the northeastern rim of ...

NASA used its Mars Odyssey orbiter to capture a unique view of the largest volcano in our solar system, the colossal Martian feature Olympus Mons.

Olympus Mons reaches an astonishing height of 16 miles (26 kilometers) - three times as tall as Mount Everest. And it may tell us quite a bit about its home, Mars.

The Mars Express orbiter, a spacecraft managed by the European Space Agency, snapped images of landslides on Olympus Mons, the biggest volcano in our solar system.

Scientists are positing that Mars' giant Olympus Mons volcano, which is roughly the size of France, may once have been an island.

Mars' Olympus Mons may have once been a volcanic island surrounded by an ocean nearly 4 miles deep, according to geological evidence found in the extinct volcano.

NASA Odyssey orbiter snapped a first-ever image of a Mars volcano peeking above clouds before dawn. It’s twice as tall as Earth’s largest volcano.

NASA's long-running Mars Odyssey orbiter celebrated its 100,000th orbit with a fresh view of Olympus Mons, the largest volcano in the solar system.

A spacecraft has delivered fantastic images of Mars, showcasing textured terrain and a lone crater near the planet’s most famous landmark. Olympus Mons is the Solar System’s largest volcano ...

Olympus Mons is a giant shield volcano 13.6 miles tall, 2.5 times higher than Mount Everest's height above sea level. The volcano was first spotted in 1971 by NASA 's Mariner 9 spacecraft.