Ground-penetrating radar reveals a long-lost river system hidden under the surface of Mars. (NASA/JPL/UCLA/UiO/ETH Zurich) ...

Water is considered the basic building block for life as we know it. An extended water history on Mars widens the window of opportunity for life to have once emerged there.

New research suggests Mars may have remained habitable much longer than scientists once thought. Ancient sand dunes in Gale Crater appear to have been soaked by underground water billions of years ago ...

A massive rock from Mars, known as Black Beauty, has yielded new insights into the planet’s history. Scientists used advanced scanning techniques to examine this Martian meteorite. Despite the rock’s ...

TUSCON, Ariz. — Researchers working on the Phoenix Mars Mission say they've found evidence that liquid water exists on the red planet, though some mission scientists remain skeptical of the conclusion ...

Using its ground-penetrating radar instrument known as RIMFAX, Perseverance peered deeper beneath the Martian surface than ever before, revealing geological structures buried as far as 115 feet below ...

Fresh orbital images and new geological analysis have revealed eight mysterious caves on Mars that appear unusually well suited to protect traces of life. Together, these caverns, portals and ...

Add Yahoo as a preferred source to see more of our stories on Google. More evidence that Mars was once a habitable, wet oasis not dissimilar to Earth has been found in the rocks scattered throughout ...