How ‘Dark’ Is Dark Matter?

10:25 minutes

Dark matter has been described as “dark” because scientists believe the mysterious matter only interacts with gravity, causing it to be invisible. In a study out this week in Monthly Notices of the Royal Astronomical Society, researchers observed dark matter potentially interacting with something else—itself. Astrophysicist Richard Massey says that “this could be the first dynamical evidence that dark matter notices the world around it. Dark matter may not be completely ‘dark’ after all.”

Segment Guests

Richard Massey

Richard Massey is an astrophysicist at the Institute for Computational Cosmology at Durham University in Durham, England.

Meet the Producer

About Alexa Lim

Alexa Lim was a senior producer for Science Friday. Her favorite stories involve space, sound, and strange animal discoveries.