Arsia Mons, which dwarfs Earth's tallest volcanoes, and its two neighboring volcanoes are often surrounded by water ice ...

On May 2, as sunlight crept over the Martian horizon, the Odyssey spacecraft captured Arsia Mons, a towering, long-extinct volcano, puncturing a glowing band of greenish haze in the planet’s upper ...

During pauses between the high fountaining episodes of the ongoing Kilauea volcano summit eruption, which began on Dec. 23, ...

Arsia Mons, the southernmost of the Tharsis Montes trio, stands at an awe-inspiring 20 kilometers high, dwarfing Earth’s ...

Scientists are once again astounded by NASA’s Mars Odyssey spacecraft, which took a stunning picture of Arsia Mons, one of ...

The boat obviously requires a ticket. Options include a cruise around the lake or a quick trip to Wizard Island in the middle ...

Iowa forester Mark Vitosh shared a clip revealing how mulch volcanoes can harm trees — and that there's no fairy to fix them.

A spectacular new image from NASA’s longest-running Mars orbiter has captured a breathtaking view of a giant Martian volcano ...