Bernal sphere

For fictional structures for living in space, see Space stations and habitats in fiction.
Exterior of a Bernal sphere
Interior of a 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 non-rotating spherical shell 10 mi (16 km) in diameter, with a target population of 20,000 to 30,000 people. The Bernal sphere would be filled with air.[1]

  1. ^ Bernal, John Desmond (1929). The World, the Flesh and the Devil.