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 ...

On Wednesday, researchers released an analysis suggesting that there’s a “mass gap” in the population of black holes that ...

An international team from China and Italy has reported a possible cosmic encore to the landmark 2017 multi-messenger discovery. In November 2024, the LIGO-Virgo-KAGRA observatories detected ...

Between May 2023 and January 2024, a global network of gravitational-wave detectors picked up 128 new cosmic signals, more ...

Astronomers analyzing the gravitational-wave event known as GW200105 report evidence that a black hole and neutron star spiraled into each other on an oval-shaped orbit, rather than the near-circular ...

In a patch of sky about 1.2 billion light-years from Earth, astronomers have found a cosmic rarity: three galaxies caught in a merger, and all three of their central supermassive black holes are ...

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On November 12, 2025, a ripple passed through the fabric of spacetime and triggered alarms at three gravitational-wave ...

"This is convincing proof that not all neutron star–black hole pairs share the same origin." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.