Einstein believed that black holes didn't really exist. But they do: that much we know. We don't know much else about them.

Secretary of Defense Pete Hegseth went all in on his President Trump impression during a visit with troops—and he did not ...

NASA has confirmed a massive black hole collision in a nearby galaxy, releasing an enormous amount of gravitational waves across the cosmos. This event, detected through space telescopes and ...

No explosive birth needed: The discovery suggests this black hole likely formed through direct collapse, a quiet implosion ...

When two enormous black holes collide in deep space, they send shockwaves rippling across the universe. These shockwaves, called gravitational waves, bend and stretch the fabric of space itself.

Extreme cosmic events such as colliding black holes or the explosions of stars can cause ripples in spacetime, so-called gravitational waves. Their discovery opened a new window into the universe.

When two galaxies collide and merge, gas is funneled into the central region of that merger. Some of that gas ends up getting close to the newly merged black hole and forms the accretion disk.

When two galaxies collide and merge, gas is funneled into the central region of that merger. Some of that gas ends up getting close to the newly merged black hole and forms the accretion disk.

A novel way to find aliens might be through gravitational wave detection, Loeb says. He is interested in laser interferometry ...

Primordial black holes are the earliest black holes thought ... but create gamma rays when they collide with each other and self-destruct. So, what could have happened to massless Hawking relics?