From the brains behind brains on, this is the moment of um.

Answering those questions that make you go,

um. Um, um, um, moment of um, moment of, um, um, um, moment of um comes to you from 8 p.m. studios. I'm Bobby, the bouncy ball.

Um. Oh boy, oh boy, oh boy, another beautiful day. For me every day is an honest to goodness gift,

because it means I have another full 24 hours to bounce.

As a rubber bouncy ball, bouncing is my favorite way to travel.

I bounce everywhere. Up the stairs, down the stairs, across the room, into the kitty litter box, and oh wait, oh, oh, oh, oh, oh, oh,

scratch that last one, not a great place for bouncing.

Anyway, like I was saying, bouncing can take you literally anywhere.

I bet I could bounce across the entire planet if I wanted to.

But hang on, isn't the Earth round like a big beautiful bouncy ball?

So then why does it look flat from where I'm sitting? My buddy Charles was just asking about this.

Hello my name's Charles. I'm from Tarsin City, Nevada, and why is the earth so flat?

But in outer space, thinking like a scientist.

My name is Ian Hall. I'm an astrophysicist from the UK. Now it's because we can't see

enough of the earth with our eyes to see its curvature usually.

If you live near the ocean and you watch a boat sailing outwards,

as it gets further away from you, you would see it start to disappear from the bottom.

So the last thing that you might see would be the mast on the boat, and it would look like it was sinking.

And this is because it's moving away from you on a curved surface.

Also if you watched a sunset from the bottom of a hill

and then wait until the last bit of the sun disappears

...