Mars, our neighboring red planet, possesses some of the most extreme topographical features within our solar system. Its colossal volcanoes, canyons and impact craters offer clues into its ...

There are a couple potential explanations for distinctive markings found on a Martian rock, but new evidence suggests they ...

The intriguing chemistry of a rock collected by the Perseverance rover could trace to microbial activity—or not ...

A rocky stretch in Western Australia's Pilbara, near Earth's earliest-confirmed lifeforms, was hit by a meteorite about 3.5 ...

but this ancient shoreline on Mars seemed to lie inside a 2,050-mile-wide (3,300-kilometer-wide) impact crater called Utopia Basin. Utopia Basin is, in fact, the largest known crater in the entire ...

Sometimes scientists must dig and work and sweat to make scientific discoveries. And sometimes a robot rolls over a rock that ...