Everything you see around you—your phone, your cat, the Earth, the stars—makes up just 15% of the mass in the universe. The remaining 85% is a ghost. We can’t see it, touch it, or sense it in any way.

A team of researchers says black holes may serve as the perfect test bed for finding dark matter. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

A new algorithm will search images of colliding galaxy clusters for evidence of self-interacting dark matter. When you purchase through links on our site, we may earn an affiliate commission. Here’s ...

Dark matter makes up most of the mass in galaxies and galaxy clusters. In fact, scientists estimate that ordinary matter makes up only about 5% of the universe, while dark matter makes up about 27%.

About 80% of the universe's mass is thought to consist of dark matter. Yet, little is known about the composition and structure of the particles that make up dark matter, presenting physicists with ...