 But that's all kind of crazy small really small Let's see if we can go a little bit bigger if I could set you some homework This is what I'd ask you to do. What I'll ask you to do is to go home Wait for the Sun to go down go outside Look up to the sky and count the stars. That's it. It's as easy as that. It's not very difficult homework It's not a very short homework because if you could count them all You would manage to count a hundred billion stars No, what does that mean? That's another just a crazy big number hundred billion stars six billion people that's 16 each So actually your homework tonight could be to go and count 16 stars They're yours There's enough to go around those 16 stars are only from our galaxy. It's called the Milky Way If you start to use telescopes to be powerful telescopes down in Hawaii even the Hubble Space Telescope What happens is that you start to see other galaxies In fact, there's another hundred billion of them each containing a hundred billion stars So in fact for each one of you, there's not 16 stars But for each one of you there is about a trillion stars out in the universe if I could take you on An amazing journey what I would do is I would take you to the very edges of the observable universe We'd go out there and we'd sort of turn and we'd look back and we'd see all of the galaxies and the stars out in the Universe, but then we'd start to zoom back in and we'd find our solar system We'd find our planet we keep zooming zooming zooming in until in the end We could see those same little tiny particles that you're made of