The Only Thing In The Universe That Baffles Neil deGrasse Tyson

Neil deGrasse Tyson is a renowned astrophysicist who can explain just about everything related to science and outer space. Well, except for one thing.

"Dark matter. I get asked what it is. And my best answer is we haven't a clue. We don't know what it is," Tyson tells us.

The StarTalk Radio host does his best to explain dark matter and why it's such a complex subject.

Produced by Kamelia Angelova, William Wei, & Alana Kakoyiannis

StarTalk Radio is a podcast and radio program hosted by astrophysicist Neil deGrasse Tyson, where comic co-hosts, guest celebrities and scientists discuss astronomy, physics, and everything else about life in the universe. Follow StarTalk Radio on Twitter, and watch StarTalk Radio "Behind the Scenes" on YouTube.