A Brief History of the World’s First Planetarium
Hacker News
MAY 1, 2024
The other would show the Ptolemaic, or geocentric, sky, with the viewer fully immersed in the view, as if standing on the surface of the Earth, seemingly at the center of the universe. World War I interrupted the work, but by 1920 Bauersfeld was back at it. At the suggestion of his boss, Rudolf Straubel , he added stars.
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