Before Apollo astronauts set foot upon the moon, much remained unknown about the lunar surface. While most scientists ...

On a crisp January evening, as the International Space Station (ISS) streaked across the sky at 17,500 miles per hour, ...

"Cartilage damage is a really major issue that space agencies need to address despite how very poorly understood it is." ...

"I'll always remember the first time I saw those iridescent clouds and was sure at first it was some color artifact." ...

There's a lot less sky and a lot more moon in view for Firefly Aerospace's "Ghost Riders in the Sky" mission.

A small uncrewed spacecraft is buzzing the moon, with under two weeks remaining before its bold attempt to land on the lunar ...