Images of O'Neil cylinders captivated me as a child, and they still do now. So familiar and yet so weird.
Something similar is depicted in the film 'Elysium'. But it is a open torus, rather than a closed cylinder and they never explain how they keep the atmosphere in.
Something similar is depicted in the film 'Elysium'. But it is a open torus, rather than a closed cylinder and they never explain how they keep the atmosphere in.