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.

Mars' Olympus Mons is the largest volcano in the solar system. The massive Martian mountain towers high above the surrounding plains of the red planet, and may be biding its time until the next ...

Olympus Mons is as wide as France but would be far easier to climb than many of the Earth's perilous mountains due to a quirk unique to the Red Planet.

A team of scientists recently discovered frozen water in an unlikely place on Mars: 13.5 miles above the surface, nestled near the peak of our Solar System’s largest mountain, Olympus Mons ...

Olympus Mons reaches an astonishing height of about 16 miles (26 kilometers), or around three times as tall as Mount Everest.

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 ...

Olympus Mons is located in the Tharsis region, which spreads near the equator of Mars, and boasts an elevation of about 27,000 m above the surface of the planet.

Could a mountain as high as Olympus Mons on Mars (21.9 kilometres, more than double the height of Everest) be possible on our planet? Hillary Shaw Newport, Shropshire, UK ...

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 ...

Our very own solar system bestows some of the most awe-inspiring geologic wonders we’ve ever seen, and this includes Olympus Mons on Mars, which is a shield volcano and holds the distinction of being ...

Imagine a volcanic island about the size of France and over 20,000 metres high. Such a landscape may once have existed on the planet Mars.