There are about 15,000 satellites orbiting Earth. Most of them, like the International Space Station and the Hubble Telescope ...

One of the most crucial elements of a forecast is sky conditions. Whether it's sunny, partly cloudy, or storming. Typically, we use radar to detect rain, but when it is not raining, how do we observe ...

The satellite population in low Earth orbit (LEO) is not an open book. While data on many satellites is public, others are shrouded in secrecy, and information is incomplete for others. New research ...

As space exploration turns to the commercial sector, costs are coming down, but that doesn't mean that launching satellites ...

U.S. and Chinese satellites routinely spy on each other in orbit, rehearsing for more aggressive operations in the event of ...