Physics

Google claims quantum supremacy – IBM says not so fast. One researcher explains why he doesn't see quantum computers outpacing classical computers any time soon ... and maybe not ever.

At some point, the rules of the subatomic give way to the rules of the macroscopic. But how? We're not exactly sure, and it's been a long, strange journey in trying to answer that question.

The cracks, if they exist, are old, remnants of a time shortly after the Big Bang.

Without the turbulence, the galaxies would die in just a few billion years.

It was predicted four decades ago, but only found now.

These bursts release more energy in a few seconds than the sun would produce in its lifetime.

New calculations suggest that some black holes can grow hair, but they can't keep it for long. Alas, they go bald again.

Standing on one moon, you'd see the other pass overhead twice before ducking around to pass on the other side.

This wasn't what anyone was hoping for.

A quantum experiment raises deeply philosophical questions about the fundamental nature of reality.

Physicists think this might be the first of many hidden states of matter that could be uncovered using laser flashes.

Physicists may have solved a decades-long mystery about how our universe came to be.

At last we can sneak a peek at the dead-and-alive cat.

Is the universe flat? Maybe not.

It took just fractions of a second.

What's the recipe for a living planet? A new paper suggests that the right number of impacts is a key ingredient.

A brand-new particle has possibly emerged and is altering the future destiny of our entire cosmos, a physicist says.

Mathematicians have uncovered a big new piece of evidence for one of the most famous unproven ideas in mathematics, known as the twin prime conjecture.

Physicists have figured out what's lurking inside of white dwarfs, revealing the stellar corpses are creamy and filled with exotic quantum liquids.