Dark matter has been thought to be cold and collisionless, meaning its particles don't interact with each other. The new study, however, challenges this assumption.

Dark matter may consist of two particles, explaining why only the Milky Way shows a strange gamma-ray signal while smaller ...

A new study led by researchers at the University of California, Riverside, suggests that ...

Learn how a two-state model of dark matter could explain why gamma-ray signals appear in some galaxies but not others.

Notoriously ghostly particles called neutrinos may have revealed a crack in our understanding of all the particles and forces in the universe. The standard model of particle physics, which catalogues ...

Stephen has degrees in science (Physics major) and arts (English Literature and the History and Philosophy of Science), as well as a Graduate Diploma in Science Communication. Stephen has degrees in ...

A green spectacle. With protective eyewear, ISTA PHD student Andrea Stöllner takes a glimpse into the experimental chamber (in the foreground) where two laser beams trap a single particle. One ...

Physicists are eyeing charged gravitinos—ultra-heavy, stable particles from supergravity theory—as possible Dark Matter candidates. Unlike axions or WIMPs, these particles carry electric charge but ...

A complete survey of all the particle and antiparticle activity that goes on during the Sun’s 11-year cycle has found previously unknown ways these particles behave. Cosmic rays coming from outside ...

Tiny particles bubbling up from melting Arctic sea ice play a key role in cloud formation, suggests new research. The ...