New research shows that when an asteroid slammed into the moon billions of years ago, it carved out a pair of grand canyons ...

NASA astronauts Sunita Williams and Barry Wilmore conducted a 5-hour spacewalk to fix a key communication issue on the ISS.

The Grand Canyon in Arizona is one of Earth's natural wonders, carved out over millions of years by the gradual erosion power ...

Our 11-year-old son is fascinated with those astronauts who are stuck on the space station. He asks about a lot is how being ...

China plans to send a flying robot to the far side of the moon next year to search for the frozen water that could hold the ...

Among the weirder photos are ones purporting to show an "alien boot," a flying UFO, a mysterious doorway, metallic wreckage, ...

Boeing announced Monday it lost $523 million on the Starliner crew capsule program last year, putting the aerospace company ...

Prolonged exposure to microgravity in space weakens the heart muscle and disrupts the heart’s rhythm, Johns Hopkins ...

Humans are inching closer to living beyond Earth, but sustaining life on the moon or Mars requires a critical resource: water ...

The two astronauts stranded on the International Space Station took a spacewalk together late last week -- and one of them ...

A man charged with sexually assaulting young girls at a Green Bay resort entered a “no contest” plea on Monday.

The award-winning novel 'Orbital' explores the inner thoughts of astronauts during a single day aboard the International ...