Space/Science — HabitableZone

Space/Science » in reply to 'We' is a concept, not a number

re: Spacefaring civilization is also a concept

But if you think the number should be "2" or thereabouts, then the space program needn't be changed at all. If you think the number should be larger, then the paradigm changes. Shooting for Mars becomes an insignificant accomplishment. After all, why would NASA be interested in building a greenhouse on Mars if they only ever intend to send two astronauts there? The public would support them on the mistaken belief that more could travel there eventually, when in fact that capability is not being developed!

The present population of the world is over 6 billion. Suppose the future has humanity set up as some kind of "spacefaring civilization" -- In your opinion, what would the passenger capacity be?

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