Observations of gravitational waves might allow us to test the quantum properties of black holes.
Close Enough
To make a black hole, do we have to squeeze mass all the way to its limit, or do we just have to get close enough?
Are You A Black Hole?
You aren’t a black hole, and that means a particle moving at nearly the speed of light isn’t one either.
A More Perfect Union
The second detection of a black hole merger confirms the success of gravitational wave astronomy.
Hair Of The Dog
It turns out that black holes might have hair after all.
The Challenge of Proving Black Holes
What if black holes don’t exist, but similar objects do? How would we tell the difference?
Black Hole Alignment Is Not So Mysterious
There’s news of a mysterious alignment of black holes. While that makes for good headlines, the actual scientific findings aren’t so mysterious.
Huge Black Hole In A Cosmic Backwater
Inside the galaxy known as NGC 1600 there is a black hole 17 billion times more massive than our Sun.
Black Holes With A Twist
If you were to spin a ball, for example, the texture of the ball’s surface would make it easy to see the ball is rotating. But what if the ball were perfectly smooth?