O’Neill Cylinder

The O’Neill cylinder is a space settlement concept proposed by American physicist Gerard K. O’Neill in his 1976 book The High Frontier: Human Colonies in Space. O’Neill proposed the colonization of space for the 21st century, using materials extracted from the Moon and later from asteroids. Wikipedia

We humans don’t really need to populate Mars or any other planet for that matter what we need to do is build O’Neill cylinders


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