An underwater observatory recently detected a startlingly energetic cosmic neutrino. One possible cause involves a phenomenon ...

How astronomers used gravitational lensing, a space-time trick predicted by Einstein, to detect a black hole measuring 30 ...

In 1916, only a year after Albert Einstein had published his general theory of relativity, Karl Schwarzschild used mathematical calculations to show this: If sufficient mass could be placed into an ...

There are other ways of making these mindless eating machines, as well, including smashing neutron stars together, letting ...

A blazing supermassive black hole can influence far more than its own galaxy. Scientists found that quasars emit radiation strong enough to shut down star formation in nearby galaxies millions of ...

Where is the closest black hole to Earth? Well, they're pretty hard to find, so the record-holder keeps getting updated.

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

By Will Dunham WASHINGTON, April 3 (Reuters) - A supernova - the explosive death of a star - is always violent, blasting material into space while typically leaving behind a compact stellar remnant ...

Convention dictates that m2 is always the smallest of the pair. The data from the fourth observing run of the ...

Scientists at Raman Research Institute have decoded mysterious repeating X-ray flares from deep space, suggesting the source ...

What’s “inside” a black hole? Are they portals to another universe, or are actually other universes in miniature? Those are fringe theories, but no one knows for certain. The incredibly heavy objects’ ...