China routinely sends astronauts to and from its space station Tiangong. A crew capsule is about to undock from the station and return to Earth, but there's nothing routine about its journey home.

As a technology entrepreneur, I applaud Google’s ambitious plan. But as a space scientist, I predict that the company will soon have to reckon with a growing problem that all space-racers are ...

High up in Earth's orbit, millions of human-made objects large and small are flying at speeds of over 15,000 miles per hour.

The next crew handover aboard the ISS is not until July of next year. And the next scheduled astronaut mission to the station ...

Dan Falk: Space junk broadly refers to stuff that’s in space that was put there by humans, and that is no longer doing what ...

Satellite breakups and anti-satellite tests have created an alarming amount of debris, a crisis now exacerbated by the rapid expansion of commercial constellations such as SpaceX’s Starlink. The ...

Every year, we shoot several thousand satellites and other objects out into space. When satellites die, they become space ...

This week sees the Moon and Jupiter make for a nice pairing in the chilly December evening sky and also the start of the Geminids meteor shower, ...

India has about 140 satellites in orbit as of December 2025, of which 57 are completely operational and 83 non-functional but ...

SpaceX has been successfully landing the first stage of its Falcon 9 rocket for the last decade. Doing so allows SpaceX to ...

US sanctions on Russia’s space industry triggered a rapid restructuring, focused on domestic production, Chinese cooperation, ...