Colonization of the Moon the Soviet leadership made some of its first public pronouncements about landing a man on the Moon and establishing a lunar base. Crewed exploration of the lunar surface began in 1968 when the Apollo 8 spacecraft orbited the Moon with three astronauts on board. This was mankind's first direct view of the far side. The following year, the Apollo 11 Apollo Lunar Module landed two astronauts on the Moon, proving the ability of humans to travel to the Moon, perform scientific research work there, and bring back sample materials. Additional missions to the Moon continued this exploration phase. In 1969,
The First Men in the Moon makes the air above it weightless and shoots off into space. Bedford sees in the commercial production of cavorite a possible source of "wealth enough to work any sort of social revolution we fancied; we might own and order the whole world". Cavor hits upon the idea of a spherical spaceship made of "steel, lined with glass", and with sliding "windows or blinds" made of cavorite by which it can be steered, and persuades a reluctant Bedford to undertake a voyage to the moon; Cavor is certain there is no life there. On the way to the moon, they experience