Compelling evidence that the structure of matter surrounding supermassive black holes has changed over cosmic time has been ...

A cosmic monster shows up in our backyard and suddenly physics starts acting like it drank five espressos. Let’s explore how ...

Astronomers capture the twinkle of a distant quasar, RX J1131, and reveal the secret size of a black hole's fiery corona.

"The sizes of these radio jets are not comparable to our solar system or even our galaxy." ...

In a groundbreaking discovery, astronomers have successfully discovered 53 new quasars powered by supermassive black holes ...

New measurements using gravitational lensing suggest the universe’s current expansion rate does not agree with signals from ...