The fact that the cold, dry Mars of today had flowing rivers and lakes several billion years ago has puzzled scientists for ...

The 3.7-billion-year-old formations in the planet's Gale Crater suggest the presence of long-gone bodies of liquid water, ...

Mars' southern hemisphere absorbs a lot of the sun's energy during the Red Planet's spring, and that may be causing Mars' ...

Experts told Newsweek about the difficulties of reaching Mars as the United States faces complex challenges in space policy.

Planetary Parade A rare alignment of Venus, Saturn, Jupiter, Mars, Uranus, and Neptune is visible this month and into early ...

The area containing the clay-bearing mounds is geologically connected to Oxia Planum, which is where Rosalind Franklin will ...

Images of Mars taken from orbit show thousands of mounds in a region sculpted by water billions of years ago. A robotic ...

Although it's being mistakenly promoted as a "rare planetary alignment," one of the best "planet parades" in half a century ...

Caltech scientists published a study using NASA Curiosity rover imagery showing the past existence of warm water on Mars.

Stargazers will be treated to a dazzling six-planet "alignment" this January.

UK researchers have confirmed the existence of a “super Earth” located 20 light-years away that could reveal the existence of ...