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

A dazzling image taken by NASA's 2001 Mars Odyssey orbiter shows an unprecedented view of a 12-mile-high volcano poking ...

NASA's Mars Odyssey spacecraft has captured a breathtaking image. The image shows Arsia Mons, a massive Martian volcano. The ...

Because of potential water and a source of heat, Olympus Mons has been suggested as a place to look for potential alien life; ...

Mauna Loa is significantly shorter than the tallest volcanoes on Earth by height from sea level. But in terms of volume, Mauna Loa and fellow Hawaiian volcano Mauna Kea, which both have immense ...

Mauna Kea, located on Hawaii’s Big Island, is a dormant volcano recognized as the tallest mountain on Earth when measured from its base on the ocean floor to its peak, which rises 4,207 meters ...

A spacecraft's-eye view over the landscapes of Mars has just given us a first-of-its-kind glimpse of the giant, ancient edifice known as Arsia Mons.

One of Mars' tallest volcanoes peeps over a thick layer of clouds, in Odyssey’s first picture of Arsia Mons peering over the ...