Bernal sphere
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A Bernal sphere is a type of space settlement intended as a long-term home for permanent residents, first proposed in 1929 by John Desmond Bernal.
Exterior of a Bernal sphere
Interior of a Bernal sphere
The inside of the sphere as viewed from the sunlight "portal"
Agricultural module of a Bernal sphere
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,
Bernal sphere
…A Bernal sphere is a type of space settlement intended as a long-term home for permanent residents, first proposed in 1929 by John Desmond Bernal. Bernal's original proposal described a hollow…
A Stanford torus interior (cutaway view)
Interior view of a large scale O'Neill cylinder, showing alternating land and window stripes
"The Brick Moon" – a 1869 serial by Edward Everett Hale – was the first fictional space station or habitat. (Described by other sources as a station or habitat.)
A pair of O'Neill cylinders