General relativity stands as one of the bedrock theories in modern physics. Its strange view of relative time and space has been confirmed by countless experimental and observational tests, from ...

For those who watch gravitational waves roll in from the universe, GW250114 is a big one. It's the clearest gravitational wave signal from a binary black hole merger to date, and it gives researchers ...

An analysis of a record-breaking gravitational-wave detection tests whether general relativity holds under extreme conditions. A year ago, the LIGO-Virgo-KAGRA Collaboration recorded the clearest ...