Today's focus is on outer space. Find out how things work and discover the history of developments invented for space travel which we still use today, like cordless power tools and freeze dried food.
The History Hunters make their own rocket using the principles of aerodynamics to make sure it's the best shape to fly through the air. First, they'll need some plastic piping, paper and cardboard. The second challenge examines how microgravity works in space.
Back in the studio, Calum and Kerry Anne get dressed up in space gear and use a balloon wrapped in foil to work out what a black hole is.
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A religion is a belief system with rituals. The missionary kopimistsamfundet is a religious group centered in Sweden who believe that copying and the sharing of information is the best and most beautiful that is. To have your information copied is a token of appreciation, that someone think you have done something good.