The Artemis program has been NASA's best chance to get "boots on the moon" again. But with the new US administration taking ...

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

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, ...

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

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

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

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

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

You might want to keep your eyes on the skies through next month: Six planets will align in January and February.

Baker said that there are other astronomical events that may be more interesting than the parade of planets. Baker said Mars ...