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

The universe is full of black holes. In the past decade, scientists have detected the signals of their collisions and taken images of the light from the gas swirling around them—and this has helped us ...

A team of scientists has developed a recipe for black holes that eliminates one of ... of extremely strong gravity, probably far stronger than what we can hope to observe," Molina-Niñirola ...

You see, the more mass you can shrink into a small space, the stronger your gravitational force will become. To make Earth into a black hole, for instance, you'd have to shrink it to less than an ...

XMM-Newton proved particularly critical to studying Ansky’s behavior, since it is the only telescope sensitive enough to capture fainter background X-ray light amid the black hole’s stronger X ...

If you were going to design an object to preserve mystery while being utterly troubling, you couldn't do much better than a black hole ... and the stronger the influence of gravity.