Hypothetically speaking;
Is 'catastrophe' on earth in the same hypothetical chapter as "we found a new planet, lets send some probes and seed pods to colonize it just in case earth ever becomes uninhabitable; simultaneously we get to claim colonization rights if it ever becomes an issue"?
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If faster-than-light speed travel is not possible, how would you send a human to another planet in a different star system?
So how did humans get here intact?
Religion has its own answer.
Another possibility is that a human could live several thousand years while in deep space?!?
No?.. humans don't live that long.. sucks to be a human.
I've long said 'freeze the seed' and pitri-dish/clone the bio-goo after the deep space craft is in orbit in 'the new heaven' around the 'new earth'
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I've been thinking about an 'ark' for many years and wondering 'how would the poor humans get the money and public support for such an endeavor?'
What about building a bio repository on the moon and use that research to figure out how to build a space station and cloning repository around a 'new earth' (distant planet), and in the short-term, claiming moon-development rights in international court and mining those prescious rocks which contain large amounts of Helium3 (useful for "green" H3 reactors here on earth.)
But wait, there's more, once militarized, the repository on the moon could be set up as a dead-hand launch to use mass-weapons.. just incase one or more nations become too aggressive, ie the 'catastrophe' that would be WorldWar3.
Hypothetically speaking, can the possibility of a 'catastrophe' lead to the situations which inaugurate that catastrophe?