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

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

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.

The northern plains of Mars, marked by thousands of mounds and hills, hold significant evidence of the planet's watery past.

President Donald Trump made a bold promise to America minutes after taking the Oath of Office: pledging that an American flag ...

Four planets will be in the parade in January while seven will align in February. Here's how to see the events.

Heads up! Four planets are visible in the evening sky this month, and another two planets can be found with a little help.