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 ...

Dark matter doesn’t absorb or emit light. It also doesn't interact with ordinary matter, making it hard to detect. Yet, a new theoretical study shows that hypothetical dark matter particles could ...

We may be more in the dark about dark matter than previously thought, according to a new analysis of distant galaxy clusters. Yale astrophysicist Priyamvada Natarajan, a leading theorist on the nature ...