Welcome to Star Talk.

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

Star Talk begins right now.

Welcome to Star Talk Radio, I'm Neil DeGrasse Tyson.

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

The American Museum of Natural History.

This show features the comedian Joan Rivers, who sadly passed away recently.

Joan was a guest on Star Talk during our first season in 2009, and we've excavated that

old show to pay tribute to her today.

Back in 2009, my co-host was the comedian Lynn Coplitz, and Joan Rivers was Lynn's

good friend and comedic mentor.

So in this first interview clip, Lynn, Joan, and I hang out in Joan Rivers' New York

apartment and talk about some highlights from the 1960s, who are parents on the Ed Sullivan

show and the Apollo 11 moon landing.

Star Talk Radio is here in Joan Rivers' library, and I'm Neil DeGrasse Tyson with Lynn

Coplitz and Joan Rivers.

It's my library, I should be in here.

So Joan, Star Talk, as you know, we talked to anybody who's got something to say about

the universe, and we know you had stuff to say about everything, including the universe.

So you realize that in space, particularly in orbit around Earth, there's no gravity,

there's zero G, and on the moon it's like one sixth G.

And so with less gravity, things float.

...