Scientists directly measured the lithium left behind in the mesosphere when pieces of a SpaceX rocket fell to Earth over ...

Is it time for space lasers yet? Almost. As time passes, ideas that were once confined to the realm of science fiction become more realistic. It's true of things like using robots to explore other ...

The system may one day be used to push debris off a collision course with satellites. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Breaking ...

As the Cold War raged between the United States and the Soviet Union, the possibility of taking the war to outer space seemed remote. But it almost happened in the late 1980s. As President Ronald ...