The reason we call dark matter dark isn't that it's some shadowy material. It's because dark matter doesn't interact with light. The difference is subtle, but important. Regular matter can be dark ...

Most people rarely experience the effects of dark matter in ordinary life. However, we live in an environment affected by dark matter. You are sitting beneath stars that remain in place due to the ...

A new preprint study suggests that tiny amounts of dark matter — the mysterious material that seems to make up about 85 percent of the matter in the universe — could behave like high-speed projectiles ...

A few decades ago, astronomers realized they had a problem: They could not find enough matter in the universe to account for all the space in between stars and galaxies. The missing mass begged the ...

Dark matter is the elusive, invisible substance that appears to make up more than 80 percent of the total mass in the universe — far more than accounted for by the "regular" matter that makes up ...

Perhaps the biggest question in astronomy right now is one that sounds simple: What is the universe made of? We know about protons, neutrons, and electrons, and we know these particles combine to ...