Physicists have determined that most of the universe is dark matter -- invisible to us but affecting the universe anyway.

Physicists know that something unseen is sculpting the cosmos, outweighing ordinary matter by roughly a factor of five, yet every detector built so far has come up empty. One of the most audacious ...

Astronomers have long puzzled over the cause of a mysterious “glow” of very high energy gamma radiation emanating from the ...

A new study casts doubt on the universe’s accelerating expansion, suggesting dark energy might be weakening over time.

Dark matter may be invisible, but scientists are getting closer to understanding whether it follows the same rules as ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. An illustration shows a figurative representation of the cosmic web breaking apart in later eras ...

The universe is expanding, and that expansion is accelerating. But what is causing that to happen? The leading hypothesis is a repellent force that astrophysicists refer to as “dark energy,” which ...

Particle physics continues to probe the most fundamental constituents of matter while dark matter research seeks to illuminate the unseen mass that permeates our Universe. Recent efforts have ...

An experiment designed to hunt for ever elusive dark matter has returned some strange and exciting signals. The anomalies are probably not dark matter itself, but could be an indication that we’re on ...

Scientists talk about dark matter an awful lot for something they don’t actually understand very well. They say that it’s important — and that we wouldn’t have stars and galaxies without it — though ...

Physicists at Stanford University and SLAC have built a contraption they hope will detect dark matter, though exactly which theoretical particles they think they’ll find—hidden photons or little blips ...