Sexy astrophysicist Neil deGrasse Tyson made his tenth "Colbert Report" appearance on Monday, this time promoting the return of his Fox documentary series, "Cosmos."
“Once science has been established, once a scientific truth emerges from a consensus of experiments and observations, it is the way of the world," Tyson told Colbert. "What I’m saying is, when different experiments give you the same result, it is no longer subject to your opinion. That’s the good thing about science: It’s true whether or not you believe in it. That’s why it works.”
Watch the two-part interview below: