The massive black hole has been dubbed GW231123. Its unusual size and behavior is challenging scientists' understanding of ...

A new method to analyze gravitational-wave data could transform how we study some of the universe's most extreme events—black ...

Astronomers have revealed the largest black hole merger to date. This illustration shows how the merger would appear to our ...

Our galaxy may reside in a billion-light-year-wide cosmic bubble that accelerates local expansion, potentially settling the ...

IC 1101 holds the title of the largest galaxy known to humanity, and its colossal size is almost beyond comprehension.

Gravitational-wave detectors have captured their biggest spectacle yet: two gargantuan, rapidly spinning black holes likely ...

“It’s the most massive [merger] so far,” says Mark Hannam, a physicist at Cardiff University, UK, and part of the LVK ...

Astronomers have been aware of cosmic vampires, dead stars that hungrily strip plasma from victim stars, for some time. New ...

New gravitational wave findings from the LIGO-Virgo-KAGRA Collaboration report the discovery of the largest black hole merger ...

Our Milky Way could have many more satellite galaxies than we've detected so far. They're just too faint to be seen.

In summer, we face toward the Milky Way's hub in the Teapot constellation, home to the galaxy's supermassive black hole.