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O'Neill cylinder
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An 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.
Artist's depiction of a pair of O'Neill cylinders
Artist's depiction of a pair of O'Neill cylinders
Interior view, showing alternating land and window segments
Interior view, showing alternating land and window segments
Artist's impression of the interior of an O'Neill cylinder, showing the curvature of the inner surface
Artist's impression of the interior of an O'Neill cylinder, showing the curvature of the inner surface
A NASA lunar base concept with a mass driver (the long structure that extends toward the horizon that is a part of the plan to build O'Neill Cylinders
A NASA lunar base concept with a mass driver (the long structure that extends toward the horizon that is a part of the plan to build O'Neill Cylinders)
Space settlement
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A space settlement is a settlement in outer space, sustaining more extensively habitation facilities in space than a general space station or spacecraft. Possibly including closed ecological systems, its particular purpose is permanent habitation.
A pair of O'Neill cylinders
A pair of O'Neill cylinders
Interior view of an O'Neill cylinder, showing alternating land and window stripes
Interior view of an O'Neill cylinder, showing alternating land and window stripes
A Stanford torus interior
A Stanford torus interior
Stanford torus exterior
Stanford torus exterior