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

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

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

Mars Odyssey orbiter has captured a stunning picture of a 20-kilometer-high volcano, peeping through the clouds on the Red ...

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

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 ...

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

Arsia Mons, which dwarfs Earth’s tallest volcanoes, and its two neighboring volcanoes are often surrounded by water ice clouds, especially in the early morning. The image released Friday marks ...

Continued activity may affect low-flying aircraft. The Klyuchevskoy Volcano (Klyuchevskaya Sopka) is the tallest active volcano in Eurasia. It is cone-shaped with a summit crater about 700 m wide.

Tourists are running for their lives as Mount Etna, the tallest active volcano in Europe, erupts. But when has this happened before?

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