TIL that O’Neill cylinders are space habitats proposed by physicist Gerard K. O’Neill. They consist of two rotating cylinders that generate artificial gravity and contain cities, farmland, and lan...

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The original was posted on /r/todayilearned by /u/trey0824 on 2024-10-19 13:37:15+00:00.

Original Title: TIL that O’Neill cylinders are space habitats proposed by physicist Gerard K. O’Neill. They consist of two rotating cylinders that generate artificial gravity and contain cities, farmland, and landscapes, with sunlight directed by mirrors, creating a livable environment for long-term habitation.