Towards the end of the movie INTERSTELLAR, while recovering in a hospital on Cooper Station, Cooper walks over to the window and sees a curved habitat with houses and children playing baseball. That was very confusing for me - had the entire town moved to space with Cooper station or is Cooper able to see his home town on earth using special parabolic mirrors ?
The first guess is correct!! A scientist named O’Neill came up with the idea of two cylinders 20 miles long and 5 miles in diameter each, that could house an entire town. Artificial Gravity is produced by centrifugal force caused by rotation of the cylinders at a fixed speed similar to the rotation of earth about its axis. It is a theoretical idea only but because the movie is set in the future, we have to assume that the generation from the time of Cooper managed to make it practical/real..
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