An arrowhead-shaped rock on Mars sporting features that may hint at ancient microbial activity on the Red Planet has left ...

An image snapped by NASA's Mars rover has sparked theories of aliens on the Red Planet. The photo shows what many have ...

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

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

The idea of an ancient Martian ocean has fascinated scientists for decades. Now, groundbreaking research based on radar scans ...

Rocks loafing about on the surface of Mars have been harboring secrets about the red planet's mysterious past.

NASA’s Perseverance rover found large crystals of quartz with a high purity on Mars, which probably had to have formed in the ...

Mars just dropped a surprise golden nugget —literally. Curiosity accidentally cracked open an ordinary-looking rock, only to ...

NASA’s Perseverance rover found pale rocks containing kaolinite on Mars, a mineral that forms in warm, wet conditions.

Such major and arbitrary cuts to NASA’s budget would do very little to save money, but they will undercut and decimate one of ...

In the next decade, space agencies plan to bring rock samples from Mars to Earth. But what if these rocks contain alien ...

NASA's Perseverance rover has spotted an oddball rock in an ancient river channel on Mars. Deputy project scientist Katie ...