Space is a harsh environment for humans—we didn't evolve to live there. Systems throughout our body have specifically evolved to function under the stresses of gravity.
Because our muscles are constantly working against gravity on Earth, those muscles have a lot less work to do in space. In other words, they'll start to atrophy. That includes our heart (which shrinks a little), the muscles in our neck that hold up our heads, and our calves.
Since our bones don't experience the same loads they do on the ground, they feel no need to maintain themselves. Bone tissue is still absorbed, but it doesn't rebuild itself like it would on Earth. This absorbed bone can cause kidney stones, and the places where the bone has weakened can easily fracture.
So even if we survived that trip what good would it do. We couldn't even leave the spacecraft. 8>)
Survive a 318,000 year trip? I suspect that even the dust would be hard to identify as remains. In fact anything more complicated than a lump of rock or metal would cease to function before 1% of the trip was over.
Man's future is definitely not in space.
Survive a 318,000 year trip? I suspect that even the dust would be hard to identify as remains. In fact anything more complicated than a lump of rock or metal would cease to function before 1% of the trip was over.
Man's future is definitely not in space.
