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 last decade has brought a new way to explore the universe. Gravitational wave astronomy, made possible by observatories ...

Most people know that black holes are kind of scary. Admittedly, that's true, but black holes are so much more than that.

What if everything we know—the stars, the galaxies, the expanding fabric of space-time—isn’t floating in a limitless void, ...

Credit: Robert Lea (created with Canva) A team of scientists has developed a recipe for black holes that eliminates one of the most troubling aspects of physics: the central singularity ...

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Scientists have been left stunned after stumbling across a lone black hole drifting through space. It's not every day ...

The similarities are too striking to ignore. As we understand them, black holes have a singularity—a point of infinite density—at their heart. If you rewind the cosmic clock, the universe has ...

Instead they’d be fuzzballs: fuzzy balls of vibrating branes that lack the traditional features of black holes—an event horizon (outer boundary) and a singularity (a single point containing ...

"The singularity is the most mysterious and problematic part of a black hole. It's where our concepts of space and time literally no longer make sense," study team member Robie Hennigar, a ...