Physics

The idea that the universe splits into multiple realities with every measurement has become an increasingly popular proposed solution to the mysteries of quantum mechanics. But this “many-worlds interpretation” is incoherent, Philip Ball argues in this adapted excerpt from his new book Beyond Weird.

Oil droplets guided by “pilot waves” have failed to reproduce the results of the quantum double-slit experiment, crushing a century-old dream that there exists a single, concrete reality.

The mystery of ’Oumuamua, the first interstellar object ever observed, continues to deepen.

The new finding is challenging established theories of how planets come to be.

Three researchers shared the Nobel Prize in Physics for advances in laser physics. The winners include a woman for the first time in 55 years.

A new theory proposes that the quantum properties of an object extend into an “atmosphere” that surrounds the material.

Astronomers have known where the universe’s missing matter has been hiding for the past 20 years. So why did it take so long to find it?

Cosmologists have predicted the existence of an oscillating signal that could distinguish between cosmic inflation and alternative theories of the universe’s birth.

For decades, astronomers weren’t able to find all of the atomic matter in the universe. A series of recent papers has revealed where it’s been hiding.