For 40 years now, people have been living in outer space - first on the space stations Salyut and Skylab, today on the ISS, and perhaps, soon, in a spaceship to Mars. What is an astronaut’s life like, and what will it be like in the future? What challenges do showering, eating and sleeping bring? Astronaut Prof. Dr. Ulrich Walter explains in Spacetime how it all works, how these challenges in space are met and overcome, in everyday life, work and even love.

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