That sounds banal, but it is a fact forgotten by many. For a large portion of history, much of humanity believed that earth, its home planet, was naturally the centre of the universe around which everything else revolved. We do not notice that the world beneath our feet is continually revolving because we only perceive our own movement. We have to consciously think about the earth’s movement because we cannot see or feel it. And what does the outer world consist of when we are moving on the conveyor belt? In the predominantly dark space, we see two projections on the wall. Different animals – a fox, a raccoon and a stork – appear to float weightlessly in the room, like astronauts in outer space. But they are not alive. They are long dead, prepared by a taxidermist. The movements they appear to make come from the wind that blasts from below and prevents them from falling to the ground. The animals are in a large wind tunnel used, amongst other things, to learn skydiving.