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Infertility Could Impede Human Space Colonization
intellitech writes "The prospect of long-term space travel has led scientists to consider, increasingly seriously, the following conundrum: if travelling to a new home might take thousands of years, would humans be able to successfully procreate along the way? The early indications from NASA are not encouraging. Space, it seems, is simply not a good place to have sex."
My thoughts on how far we have come is this, my Grandfather was beaten by his dad for suggesting that man would go to the moon after reading some books, and those books where of course thrown out.
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I'd suggest breaking the problem into two parts:
1) That human kind may someday soon disappear.
2) That all life on Earth will eventually disappear.
Getting humans out of our solar system will take ages. Colonize the moon first. Create factories so more can be done in space (less requirements for launching from Earth).
But first, get _life_ off of this planet. Send some organisms, plants, rats, stuff that is hardy off to Titan or Mars and get something going. That way even if Earth is destroyed, at least there is life somewhere else that can evolve or at least live.
Tired, random thoughts... hope you get the gist of it.
There's still one simple option: frozen embryos. They could be sent along with the crew, but due to small space required for storage, and minimal requirements, they could be shielded way better than the crew, who requires a lot of room. Infertility doesn't mean inability to give birth to a child. The crew gets to a remote planet, builds a good shelter, women get the embryos (may be just perfectly well their own children, just conceived before start) and give birth to a new generation, preparing for another launch and another "leap". This still limits the range of a single "leap" - between launch and landing - but removes the limitation of "human lifespan distance from Earth".
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Reminds me of something I read a *long* time ago:
Oh, give me a locus
Where the gravitons focus
Where the three body problem is solved
Where microwaves play, down at 3 degrees K
And the cold virus never evolved.
Home, home on LaGrange,
Where the space debris always collects
We possess, so it seems
Two of man's greatest dreams
Solar power and zero-gee sex.
Sit, Ubuntu, sit. Good dog.
The coriolis effect on the inner ear would make any astronauts in such a centrifuge permanently nauseous and disoriented. You need a _much_ large diameter to get a good enough approximation of linear gravity..