i think that this would be an awesome present for my brother he really likes nat geo books and it would really make his day. i was also thinking about getting him a couple other books but if i can get this one cool if not then i won't either way he will get one. :) :)

blood flow would be changed the heart wouldn't have to beat as hard to get the blood to where it needs to go because of the 0G's.\

I wonder if the extended periods in space could have permanent effects to the way that homoscapians (humans) can move and think also if we did experiments with dna in space how would it vary from dna experiments on earth

Plz don't hate me 4 saying dis but SPACE IS COOL