Welcome to StarTalk.

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

StarTalk begins right now.

This is StarTalk Radio.

I'm your host, Neil deGrasse Tyson, your personal astrophysicist.

I'm also the director of New York City's Hayden Planetarium at the American Museum of Natural History.

Right here in the Big Apple.

I've got with me co-host, Leanne Lourid, Leanne.

Welcome back to StarTalk.

Thank you. Good to be back.

We don't get enough of you here.

No. No.

Where are you? You don't call? You don't write. You don't text.

I do tweet.

But not to me.

Which I, how do we know you're there?

I do tweet you.

But you're so busy with your millions of followers.

Billions and...

Billions of followers.

So with this is a Cosmic Query's edition of StarTalk.

And you know how, you know the drill.

...