When Will Humans Colonize Space?

Eric C. Anderson, the chairman of the startup Space Adventures, believes there will be a permanent space colony of humans during this century -- perhaps as soon as 2043. "In the next generation or two -- say the next 30 to 60 years -- there will be an irreversible human migration to a permanent space colony," he said. "I think the location is likely to be Mars. This Mars colony will start off with a few thousand people, and then it may grow over 100 years to a few million people, but it will be there permanently. That should be really exciting, to be alive during that stage of humanity's history."

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