Black holes are well known for swallowing everything around them, which is probably why they get talked about so often. On the flip side, white holes are their mysterious opposite. These theoretical ...

Science fiction is full of amazing space phenomena. Some of those phenomena have gone from theory to reality — like black holes and pulsars. But what about wormholes? These portals through space are ...

What is a black hole? Black holes are among the most extreme objects in the universe, forming when a massive star collapses ...

Theoretical physicists have long debated the possible existence of wormholes, which are mathematically possible, but no evidence points to their physical existence. One theory suggests that these ...

Simply put, a black hole is a region of space-time where gravity is so strong that nothing can escape from it. This includes light, which travels at the cosmic speed limit of 186,000 miles per second.

UCLA astronomers report the discovery of a remarkable star that orbits the enormous black hole at the center of the Milky Way Galaxy in a blistering 11.5 years — the shortest known orbit of any star ...