The world’s best clocks may be sensitive to an odd mix of quantum and relativistic effects that would stretch time and test ...

UC Riverside has developed a technology that enables scientists to peer deeper into the universe. Gravitational-wave science ...

New observations of two black holes merging have confirmed predictions made decades ago by Albert Einstein, Stephen Hawking, ...

Interference from human activity has always been a sticking point in astronomical observations. Radio astronomy is ...

Physicists are eyeing charged gravitinos—ultra-heavy, stable particles from supergravity theory—as possible Dark Matter ...

Most cosmologists believe that these stars were the first large, free-floating structures to illuminate our universe, and ...

Some things we see in space appear to outpace light. Now we are learning to harness these bizarre optical illusions to ...