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.

Some problems grow quietly, almost politely, until they stop being ignorable. Space junk is one of those. It does not ...

A routine piece of SpaceX’s vast internet constellation has turned into a real-time stress test of how the world handles broken hardware in low orbit. After a serious malfunction, a Starlink satellite ...

The ESA/JAXA BepiColombo spacecraft will take a revised trajectory to reach Mercury in response to problems with its electric propulsion system. Credit: ESA WASHINGTON — The European Space Agency is ...

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 ...