There was no World Wide Web , no cell phones -- at least not the kind that fit in your pocket -- 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 . Comment:
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 . Comment: