Men 's magazines of the time imagined moon bases that were expected to be manned . Only 12 people have walked on the lunar surface and none since then . NASA says it is planning on sending humans to Mars in the future . There have been huge technological leaps and space discoveries in the last 40 years .
Children 's magazines of the 1970s imagined moon bases that were expected to be built . Only 12 people have walked on the lunar surface and none since 1972 . NASA says it is focused on sending humans to Mars in the 2030s . There have been huge technological leaps and space discoveries in the last 40 years .