Henrik Spohler's photo project Hypothesis addresses, in analytical, documentary pictures, the world of science and research and poses questions about our relationship to nature and the environment. His photographs show experiments and scientific facilities at the edge of the technically feasible. The photo essay of around 50 images is ordered into four areas: in the chapter Time, geological time, time measurement and the existence of the universe are addressed. The chapter Space shows satellites and observatories that probe the depths of the universe.