Black Holes

Exotic Objects, Galaxies

Hubble settles an old debate about galaxies with supermassive black holes

Exotic Objects

Is there a quasar behind every black hole, and a black hole behind every quasar? Are these different faces of the same object?

Exotic Objects

It is said that most black holes likely have spin. What exactly is it that spins?

Exotic Objects, Galaxies

Are these supermassive black holes on a collision course?

Cosmology, Exotic Objects

What are intermediate-mass black holes?

Cosmology, Exotic Objects

What are primordial black holes?

Exotic Objects

What Happens When Black Holes Collide?

Exotic Objects

How Did Quasars Form?

Exotic Objects

Can Light Escape from Black Holes?

Cosmology, Exotic Objects, Galaxies

Did Stars, Galaxies, or Black Holes Come First?

Exotic Objects

How Common Are Black Holes?

Exotic Objects, Galaxies

Does Every Big Galaxy Have a Central Black Hole?