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.

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 ...

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 ...

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 ...