As the rover moved, it used a process known as ground penetrating radar (GPR) to map up to about 260 feet ... landing site in the distant past on Mars (left) and how long-term physical and chemical ...

The Red Planet and its tiny moon Deimos were recorded at a very near distance as the asteroid-chasing spacecraft completed a flyby on Wednesday.

New research provides the clearest evidence yet that Mars once contained a significant body of water and a more habitable environment for life.

A team of Chinese and foreign scientists has discovered underground sedimentary layers on Mars that appear to have been ...

Ferrihydrite, a water-rich iron mineral, plays an important role in giving the red planet its signature hue, according to the study.

Seven planets are on display in the night sky at the end of February, but some will be harder to spot than others. Here’s ...

According to NASA, multi-planet lineups are visible "every few years," but a seven-planet alignment is particularly uncommon, as each planet's orbit varies, with some moving more quickly and Mercury, ...

Present-day Mars is a barren and inhospitable planet, but it may have once had sandy beaches and tranquil ocean vistas. According to findings published on February 24 in the Proceedings of the ...

Ferrihydrite typically forms quickly in the presence of cool water and so must have formed early on ancient Mars when the planet was still wet. "We are not the first to consider ferrihydrite as ...