A 2025 satellite photo captures the stark contrast between the barren Poás volcano and the surrounding Costa Rican jungle.

The images, captured by the Mars Express orbiter, reveal the volcano's southeast flank with hundreds of overlapping lava ...

Olympus Mons, a shield volcano on Mars, is the largest volcano in the solar system, measuring approximately 370 miles in diameter and 26 kilometers in height. The formation of Olympus Mons and three ...

New images from ESA's Mars Express reveal Olympus Mons' colossal scale and intriguing features. Frozen lava tongues cascade ...

A large subterranean liquid water reservoir located deep within the Martian crust was previously found by scientists ...

On Mars, a surprise was hiding in plain sight. A tall mound near the edge of Jezero Crater turned out to be something unexpected – a volcano. For many years, it was just thought to be a regular rocky ...

A NASA orbiter has captured a stunning image of a giant volcano on Mars. The panorama, captured on May 2 by NASA’s Mars Odyssey orbiter, shows Arsia Mons, one of the largest volcanos on the Red Planet ...

A dazzling image taken by NASA’s 2001 Mars Odyssey orbiter shows an unprecedented view of a 12-mile-high volcano poking through clouds at dawn on the Red Planet. Arsia Mons, which dwarfs Earth’s ...

A NASA spacecraft that has been circling Mars for more than two decades has spotted something it never has before in well over 100,000 orbits of the Red Planet. On a morning horizon in May, the ...

Mars’s marred surface consists of craters, canyons, and mysterious formations that hint at a complex geological past. Scientists recently studied a tantalizing feature that could shed light on the ...

Scientists have identified several caves carved by water and they may have held or have evidence of extraterrestrial life.