00:02

They call it the dark side of the moon but it’s really not always dark. One side always points toward the earth but if you lived on the moon it would be dark for two weeks and light for two weeks, so every night you can look up and see the sunrise or sunset moving across the surface of the moon.

00:23

The far side isn’t completely invisible either. Just like how the Earth’s wobble gives us seasons, the moon’s wobble lets us actually see a little bit of the far side of the moon right along the edge.

00:37

Okay, so scientists still aren’t sure where the moon came from. There’s one idea that maybe it flew in from somewhere else in space and got stuck spinning around the Earth. But most scientists think that what probably happened is that a long long time ago there was a huge planet that hit the Earth. The explosion was so big and so hot that it made a giant magma ocean all over the Earth.

01:41

A bunch of rock and magma shot out and stayed in Earth’s orbit and started coming together into one big ball that became the moon. So that’s what scientists say the moon is, a big chunk of the Earth. But we know it’s actually cheese, right Dad?

01:53

That may not explain the gravity of the moon though - if it was made of cheese it would have to be less than one sixth of the earth’s gravity, depending on the kind of cheese.