Does gravity act equally on all particles in the universe, or are there differences between ordinary and exotic matter?

Every second, particles zip through your body at nearly the speed of light. They rain down from a storm high in the sky, ...

Microorganisms can do remarkable things—for example, nitrogen fixation, the conversion of nitrogen gas (N₂) into a form that ...

The world's largest particle accelerator is now preparing for its next major scientific challenge: understanding dark matter, ...

A single unexplained particle interaction has Bay Area scientists investigating a tantalizing possibility: a direct detection of dark matter, the mysterious substance thought to make up most of the ...

Astronomers have uncovered new details about a powerful pulsar wind nebula hidden inside the CTA 1 supernova remnant, ...

CERN is moving several thousand computers that control its particle accelerator hardware from Red Hat-family Linux distros to ...

Researchers at ETH Zurich and the Paul Scherrer Institute have produced an intense, cold beam of exotic atoms. They aim to use this to test a ...

A search for one mysterious particle unexpectedly revealed evidence for two different structures that may belong to the ...

In 2022, researchers detected a very odd photon from an enormous gamma ray burst that should have been destroyed on its way ...

These questions inspired our special package on “Impossible Questions,” which explores mysteries that are not just unsolved but potentially unsolvable. Scientific American spoke to Unexplainable host ...

The Cosmic Ray Division of the A. I. Alikhanyan National Laboratory has published its first dedicated meteorological study, ...