Matt Kirshen

All right.

Jamie and Sabrina from Transylvania ask, in the future, when we were all zipping around the universe on starships, how will we keep track of the expansion of the universe?

How will we find our way home when home isn't where we left it?

Well, while we are talking about distances, I think we have time to squeeze in this question, hopefully, from Chris from Marlborough, New Jersey.

It says, dearest Dr. Tyson, Dr. Friedman, and any esteemed guests, I'm going to count myself as esteemed in that case.

Chris asks, would the way you conduct your work change if we found out definitively our universe is infinite or finite in size?

Also, which options do you find more plausible?

Thank you very much, both of you, for your stewardship of cosmic curiosity.

Ooh, I love that sentence.

Beautiful.

And which do you believe is true?

Yeah, I just never... I'm still on Zeno's side and I refuse to believe motion is possible.

Oh, Zeno's paradox?

Enjoy your cruise.

I will.

I will.

It's so far so good.

We're getting away with it so far.