Baby pictures are some of a family's most cherished artifacts. The same thing can be said of the Hubble Space Telescope and ...

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 ...

Astronomers have captured the universe's first confirmed failed galaxy, a starless expanse of dark matter dubbed Cloud-9, ...

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 ...