In 1969, Neil Armstrong took the first steps on the lunar surface. Until 1972, only eleven other men followed in his footsteps. Then it was quiet around the Earth’s satellite and Mars was the new frontier. After the millennium, a comeback: China, Japan, India, Russia, Europe and the United States - the space nations want to go back to the moon. Cars, villages, vacation resorts? What is possible, what is fiction? Astronaut Prof. Dr. Ulrich Walter explains the hurdles in the new race to the moon in Spacetime.

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