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

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

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

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

If there is, or ever has been, life on Mars, the chances are it would exist in caves protected from the severe dust storms, ...

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

New research indicates that early Martian volcanoes may have emitted reactive sulfur gases that warmed the planet and supported conditions suitable for microbial life. Although scientists are still ...

On November 13, 1971, Mariner 9 became the first spacecraft to orbit Mars. At the time, scientists didn't know much about the ...

This global view of Jupiter's moon, Io, was obtained during the tenth orbit of Jupiter by NASA's Galileo spacecraft. Io, ...

Gamma Ray Spectrometer measurements from Mars Odyssey added another hint: Elevated “water-equivalent hydrogen” in the same ...

Hidden beneath Mars’ rust-red dust, ancient caves may guard the planet’s oldest secrets — and possibly even long-lost traces of life still waiting to be found, scientists say ...

NASA’s Perseverance rover has uncovered powerful new evidence that Mars’ Jezero Crater once hosted multiple rounds of flowing water, each creating conditions that could have supported life.