https://en.wikipedia.org/wiki/The_Menace_from_Earth I'm not sure how realistic t... | Hacker News

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abecedarius 7 months ago | parent | context | favorite | on: Horizontal running inside circular walls of Moon s...

https://en.wikipedia.org/wiki/The_Menace_from_Earth

I'm not sure how realistic the muscle-powered flight is, but a different form has been done on Earth.

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