Black Holes

The discovery of a completely new type of gravitational wave could reveal what happens near a black hole’s event horizon

Understanding the behavior of supermassive black holes

Extremely curved spacetime can warp cause and effect, creating channels for backward communication

Planets might exist in the least likely place you’d imagine—around the outskirts of supermassive black holes

A breeze is emanating from Sagittarius A* at the heart of our galaxy

A blip of light in the outer reaches of the Milky Way might be a bizarre black hole born at the beginning of time itself—and the long-sought solution to the mystery of dark matter. Astronomers are calling it “Phoebe”

Messier 88 is an active galaxy with a central supermassive black hole that is gobbling up gas and dust

Debate still swirls around the nature of “little red dots,” black holes glimpsed in the early universe by the James Webb Space Telescope. A controversial new weigh-in may settle the matter

Our galaxy and its nearest large companion, Andromeda, may be headed for a collision on a cosmic scale. What happens then?

The new image shows the galaxy NGC 1266, a transitional object with a clutch of young stars that likely collided with a smaller galaxy 500 million years ago

Subatomic black holes from ancient cosmic history could, in principle, make you have a very bad day. But chances are you’ll never encounter one

A first-of-its-kind observation shows how jets from voracious black holes can shape the growth of galaxies