Earth's orbit is filling up with junk. Greenhouse gases are making the problem worse. At any given moment, more than 10,000 satellites are whizzing around the planet at roughly 17,000 miles per hour.

Astronauts Barry "Butch" Wilmore and Sunita Williams were expecting to spend eight to 10 days in space. They ended up​ ...

A rendering of Europe's proposed multi-orbit broadband constellation. The march toward single broadband terminals that can tap into multiple orbits promises greater resiliency and flexibility. It also ...

Two astronauts who have been stuck in space weeks longer than planned believe Boeing will get the pair back to Earth safely even as the troubled company’s space capsule has faced a string of problems.

A routine launch of SpaceX satellites ran into problems Thursday night when they were deployed at a lower-than-intended orbit because of an issue with the second-stage engine on the Falcon 9 rocket ...

At any given moment, more than 10,000 satellites are whizzing around the planet at roughly 17,000 miles per hour. This constellation of machinery is the technological backbone of modern life, making ...