EntityQ565368· pop 18· linked from 114 articlesBernal sphereSign in to savelong-term space habitat, proposed in 1929 by J. D. Bernal, consisting of a large hollow spherical shell filled with airConnectionsspace colonizationEntityO'Neill cylinderEntityspace habitatEntityDeep Space HabitatEntityEarthConceptYuri GagarinPersonNASAConceptmirrorEntityequatorEntityatmosphere of EarthEntityInternational Space StationConceptpressureEntityWayback MachineEntityStanford UniversityEntitySpaceXEntityspace stationEntityDaniel BernoulliEntityMirEntitySkylabEntityDyson sphereEntityCategoriesProposed space stationsSpace habitats