The Busy Beaver Challenge, a notoriously difficult question in theoretical computer science, is now producing answers so ...

On September 14, 2015, a signal arrived on Earth, carrying information about a pair of remote black holes that had spiraled ...

In a recent development that has stirred the scientific community, physicists have reported a fascinating observation of light traveling in reverse through a unique material. This extraordinary event ...

When LIGO detected gravitational waves unleashed from two colliding black holes for the first time in science history, it set off a whole new era in astronomy.