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.

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 ...

To get started, all you need is a standard A4 sheet of paper and the folding skills of a 4-year-old. Reading time 3 minutes Building a spacecraft could one day be as simple as folding a piece of paper ...

HELSINKI — China is expanding its presence and capabilities in the strategically vital geostationary belt, raising security concerns due to unpredictable satellite movements, according to experts.

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 ...