Why is Mars barren and uninhabitable, while life has always thrived here on our relatively similar planet Earth?

In an unexpected turn of events, NASA’s Curiosity rover has cracked open a rock on Mars, uncovering something so surprising ...

Earth is probably stabilizing to life-friendly conditions, but Mars is different. This is indicated by simulations and ...

The Mars rover found geological formations in Gale Crater showing how water percolated beneath the surface, and ...

An analysis led by the University of Chicago of Mars Science Laboratory Curiosity rover data may explain why the planet was ...

The new images by the Curiosity rover on Mars show "dramatic evidence" of ancient groundwater in crisscrossing low ridges, ...

Curiosity stitched 291 Mastcam photos into a color-balanced 360° panorama of Gale Crater’s “boxwork” ridges—spiderweb-like ...

A rock on Mars spilled a surprising yellow treasure after Curiosity accidentally cracked through its unremarkable exterior.

A warm afternoon on ancient Mars lasted about as long as a Silicon Valley internship. That is the sobering conclusion of a ...

The images and data being collected are already raising new questions about how the Martian surface was changing billions of ...

Scientists had hypothesized before the rover arrived that the peculiar ridges formed with the last trickles of water in the ...

The new images taken by NASA’s Curiosity Mars rover raises fresh questions about how the Martian surface was changing ...