On the gas-pressure disc of the gasometer there are cultural relics, historical telescopes, measuring instruments, astronomical charts and old globes – and beside them the modern instruments of space research. Here it becomes clear how findings concerning cosmic happenings always made progress when new observation technologies revolutionised our gaze into the depths of the cosmos. Among other things, the exhibits include a few small grams of real Moon dust. The Soviet probe Luna 24 brought them back to Earth in 1976. Also on show is a Hasselblad camera with Zeiss lenses, as used by the Apollo astronauts on their trips to the Moon. The model shown was never on the Moon but is, however, an original backup camera.