A closed door feels absolute. Light stays in one room, darkness settles in the next, and the boundary seems obvious enough to ...

A cosmic particle detector in Antarctica has detected a series of bizarre signals that defy the current understanding of particle physics, according to an international research group that includes ...

For the first time, astronomers have captured radio signals from a rare exploding star, exposing what happened in the years leading up to its death. The radio waves reveal that the star violently shed ...

Pulsars are ultra-dense, rapidly spinning, and highly magnetized remnants of dead stars. They act like cosmic lighthouses, sending out regular pulses of radio waves and sometimes gamma rays in beams ...