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Originally Posted by Dirty Dane
And not to mention medical science. As you may have seen in sci-fi movies, freeze down the body and defrost it years later in same health.
Or even more sci-fi, but not impossible; somehow your mind and soul must be programmed in your brain. If we developed computers that could leech it, store it, and insert it to a young clone of yourself. Neverending life. THAT would be freaky  |
Age is not the only factor to be concerned with.
Muscle tissue degenerates at an alarming rate when not living in gravity. Just a few months and humans are unable to walk when they return to earths gravity. Even a few weeks takes a nasty toll. By the way keep in mind you heart is a muscle.
Bone density gets greatly effected as well without gravity. A pretty big issue when after a fairly short period of time human bones could become so brittle a small jolt could shatter them.
Currently it appears reproduction just does not work without gravity. Eggs just will not develop after fertilization.
Cosmic radiation is a real bitch. Can not see it and there is no current protection from it. NASA is currently on a quickly approaching deadline to figure this one out or all long term maned space projects are to come to a halt.
Unless we are 100% sure that some distant solar systems planet has an identical atmosphere as earth we are kind of fucked.
Boils down to this. Unless humans get very genetically altered to the point where it may be questionable that they even are "human" any more, "we" aint going nowhere outside of our solar system. Then unless we find a way
to bend the laws of physics or avoid them all together, there is no way to build a ship capable of such speeds; period.