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

The Mars rover captured images of low ridges called boxwork patterns, which appear like spiderwebs from space.

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

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

"Past climates with surface and shallow-subsurface liquid water are recorded by Mars's sedimentary rocks, including strata in the approximately 4-kilometer-thick [circa 2.5 miles thick] record at Gale ...

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

Mars is thought to currently have all the necessary ingredients for life except for perhaps the most important one: liquid ...

The thick, mineral-rich layers of clay found on Mars suggest that the Red Planet harbored potentially life-hosting ...

UChicago-led analysis of Mars Science Laboratory Curiosity rover data may explain why planet was likely harsh desert for most ...

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

New images from NASA's Curiosity Mars rover show the first close-up views of a region scientists had previously observed only ...