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 ...

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

Buttes and mesas in Mars' Chryse Planitia contain clay minerals made from liquid water interacting with the rock nearly 4 ...

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

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

Harvard scientists explain how Mars had warm spells billions of years ago, allowing rivers and lakes to exist.