1/10 Dr Chris and Dr Xand learn about gravity. (R)
2/10 Dr Chris and Dr Xand learn about meteorites and what happens when they land on Earth. (R)
3/10 Dr Maggie discovers some clever coral that can tell the time. (R)
4/10 Dr Chris and Dr Xand find out about the moon and how it affects our oceans and tides. (R)
5/10 Dr Maggie fires lasers at the moon to measure just how far away it is. (R)
6/10 Dr Chris and Dr Xand learn about satellites and how thousands are orbiting the Earth. (R)
7/10 Dr Chris and Dr Xand learn about satellites and how they move around in space. (R)
8/10 Professor Brian Cox explains what the weather is like on other planets. (R)
9/10 Dr Chris and Dr Xand learn about sunlight and the incredible Northern Lights. (R)
