Welcome to StarTalk.

Your place in the universe where science and pop culture collide.

StarTalk begins right now.

Welcome back to StarTalk Radio.

I'm your host, Neil deGrasse Tyson.

I'm an astrophysicist and director of New York City's Hayden Planetarium.

Joining me this week as my co-host is Charles Liu.

And an astrophysicist with the City University of New York.

Charles, welcome back to the show.

Thank you so much for having me.

And might I say, Mr. Tyson, the hat you're wearing tonight is absolutely smashing.

I, you're revealing to a listening audience, but I'm not in my normal garb, okay.

Yeah, so I just came from a commencement.

And in fact, Gettysburg College in Pennsylvania.

Congratulations.

And they give you the, I have on that, the Renaissance version of the graduation hat,

which has these multi corners and it's soft velvet.

And I didn't want to take it off because it's the one day a year where you get to,

you know, look like you're smart.

It sets off your corsage perfectly, sir.

Thank you.

So Charles, this week we're going to bring in an interview with John Stewart.

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