Astronomers have discovered potentially the most massive black hole ever detected. The cosmic behemoth is close to the theoretical upper limit of what is possible in the universe and is 10,000 times ...

Using the Very Large Telescope (VLT), astronomers have discovered a compact binary system consisting of two white dwarfs in the center of a nearby globular cluster designated NGC 6397. The finding was ...

Black holes like the one shown in this illustration can grow astonishingly massive by feeding on immense amounts of matter. But just how big can they get? In the early 1960s astronomers discovered a ...

A black hole deep in the cosmos, some 5 billion light-years away, could be the most massive ever found. The galaxy SDSS J1148+1930 harbors a behemoth, around 36.3 billion times the mass of our Sun, ...

Over the past decade, the LIGO-Virgo-KAGRA (LVK) network has detected hundreds of black hole mergers, but none quiet as large as GW231123. At 225 solar masses, the black hole resulting from the merger ...

An ultramassive black hole so huge it could swallow 30 billion suns has emerged from the cosmic background, revealed not by its own light but by the way it warps everything around it. The object sits ...

Physicists have detected the biggest ever merger of colliding black holes. The discovery has major implications for researchers’ understanding of how such bodies grow in the Universe. “It’s super ...