NASA/JPL-Caltech/University of Arizona This Oct. 29, 2018, image from the HiRISE camera on NASA's Mars Reconnaissance Orbiter ...

NASA's Mars Reconnaissance Orbiter captured a photo of frozen sand dunes in Mars' northern hemisphere. Taken in September ...

The car-sized Curiosity rover has spotted evidence of once quite hospitable environs on Mars.

Discoveries of clay minerals in Martian mounds by researchers indicate that Mars once had large bodies of water billions of ...

The area containing the clay-bearing mounds is geologically connected to Oxia Planum, which is where Rosalind Franklin will be headed when it launches in 2028 in search of past life on Mars. It now ...

SEE ALSO: NASA scientist viewed first Voyager images. What he saw gave him ... each at some six millimeters (about a quarter inch) high. Preserved ripples on Mars' surface. Credit: Mondro et ...

Images of Mars taken from orbit show thousands of mounds in a region sculpted by water billions of years ago. A robotic mission may investigate the area one day.

"It's possible that this might have come from an ancient northern ocean on Mars." Thousands of hills and mounds on Mars have been found to contain layers of clay minerals, which formed when ...

Thousands of mysterious clay mounds found on Mars were formed by ancient water on the Red Planet's barren northern plains, ...

One of the Red Planet’s features is known as the Martian dichotomy, which describes the sharp contrast between its southern ...