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 he acknowledged "The First Men in The Moon" to be "the best of the sort [of science fiction] I have read..." (from a letter to Roger Lancelyn Green). The influence of Wells's book is especially visible in "Out of the Silent Planet", the first book of Lewis's "Space Trilogy". There, too, a central role in the story line is played by a partnership between a worldly businessman interested in the material gains from space travel (and specifically, in importing extraterrestrial gold to Earth) and a scientist with wider cosmic theories. Also in Lewis's book, the two quietly build themselves a