Nearly every galaxy has a supermassive black hole in its core. Whether the black hole forms first and then the galaxy around ...

Astronomers have obtained the sharpest-ever X-ray spectrum of an iconic active galaxy, providing the most accurate, precise ...

Galaxy mergers are not uncommon throughout the Universe; in fact, they're thought to be one of the major mechanisms whereby ...

A supermassive black hole in the spiral galaxy NGC 3783 just delivered an X-ray surprise that astronomers have never watched ...

The black hole is located in galaxy QSO1, seemingly without any stars around it, which defies the long-held idea that black ...

Astronomers have found a system of three supermassive black holes, all actively feeding, that appear to be combining into a ...

Some discoveries arrive quietly, without fireworks or clean endings. Astronomers were watching a distant flare from a galaxy ...

NASA's James Webb Space Telescope has discovered a mysterious early-universe galaxy nicknamed “Jekyll and Hyde”, revealing a ...

New XRISM X-ray observations reveal details of gas near a supermassive black hole in galaxy MCG–6-30-15, helping scientists better measure black hole spin and behavior ...

A supermassive black hole that’s 10 million times the mass of the Sun is hurtling through space, leaving a trail of gas that’s spawning newborn stars in its wake. Astronomers have long theorized about ...

New observations reveal that the relationship between ultraviolet and X-ray light in quasars has changed over billions of ...

Scientists say they've spotted the first runaway supermassive black hole that's rocketing away from its home at a staggering speed.