Gerard K. O'Neill
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Gerard Kitchen O'Neill was an American physicist and space activist. As a faculty member of Princeton University, he invented a device called the particle storage ring for high-energy physics experime
NASA envisioned an ambitious scientific exploration of the Moon.
Bernal sphere, an "inside-out planet"
O'Neill cylinders as illustrated in The High Frontier
O'Neill's ashes were carried on the upper stage of an Orbital Sciences Pegasus
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 spa
Gerard K. O'Neill
…called the mass driver. In the 1970s, he developed a plan to build human settlements in outer space, including a space habitat design known as the O'Neill cylinder. He founded the Space Studies Institute, an organization devoted to funding research into space manufacturing and colonization. O'Neill began researching…
Interior view, showing alternating land and window segments
An impression of the interior of an O'Neill cylinder by Don Davis, showing the curvature of the inner surface.
Artist's depiction of the interior of an O'Neill cylinder, illuminated by reflected sunlight