Can a single particle have a temperature? It may seem impossible with our standard understanding of temperature, but columnist Jacklin Kwan finds that it’s not exactly ruled out in the quantum realm ...

The “Theory of Everything” is the dream of physics — one framework that connects gravity, quantum mechanics, space, time, and ...

In 2023, a subatomic particle called a neutrino crashed into Earth with such a high amount of energy that it should have been ...

A sun-sized space detector called LISA is set to catch ripples from colliding black holes, giving scientists a brand-new way to explore the universe.

A newly detected gravitational wave, GW250114, is giving scientists their clearest look yet at a black hole collision—and a powerful way to test Einstein’s theory of gravity. Its clarity allowed ...

For nearly a century, astronomers have watched galaxies spin and the universe expand in ways that visible matter alone cannot explain. The dominant answer has been dark matter, an unseen substance ...

Most physicists doubt that time exists. On this page 40 years ago, we published scientific ‘proof’ of time being illusory. We pointed out that none of the equations of physics, from Newton’s laws to ...

Ian McEwan’s excellent What We Can Know is set in a UK largely swallowed up by rising seas. Emily H. Wilson explores the story of a scholar hunting a great lost poem – which may have something to with ...