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

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

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

Curiosity finds strange boxwork ridges on Mars that hint at ancient underground water. Scientists are now drilling for ...

A hidden box-lattice suggests groundwater sculpted Mars long after surface water fled; Curiosity’s drills aim to confirm the ...

The second half of the 19th century was a particularly interesting time to imagine Mars. This was a period during which the ...

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

What do the clouds on Jupiter, dust storms on Mars and rainstorms on Titan all have in common? They look like they belong on ...

Mysterious dark streaks first observed on Mars in the 1970s are not what many believed they were. Scientists now say the curious features that stretch for hundreds of meters down Martian slopes were ...

Our very existence depends not just on the existence of rocks and water. 97% of Earth's water is ocean, and ocean is ...