Blue Peter presenters Helen Skelton and Barney Harwood want to learn more about the solar system so they challenge scientists Helen Czerski and Jem Stansfield to find out more. They look at how to make telescopes and rockets, and use a toilet roll to measure the distances between planets.
Helen Skelton
Herself - Presenter
Barney Harwood
Himself - Presenter
Helen Czerski
Herself
Jem Stansfield
Himself
If one server does not work, switch to another server.
January 10, 2012
29m
0.0
N/A
N/A
0
• If the video does not load, change to another server.
• Use fullscreen for the best experience.
• Some sources may have different subtitle timing.
