Astronomers have detected the signal of a colossal black hole in deep space that likely formed when two already-large black holes crashed into each other billions of light-years away. The result is a ...

Pop culture is full of references to messages from outer space. Some of them were friendly attempts at communication, such as the five-note musical sequence transmitted to Earth by aliens in Close ...

The Japanese Defense Ministry has announced its first-ever “Space Domain Defense Guidelines” aimed at strengthening defense capabilities in outer space. The guidelines, published on July 28, outline ...

President Donald Trump has opted to relocate U.S. Space Command's headquarters from Colorado to Alabama in a move that will have deep implications for the future of the nation's military operations ...