but didnt all the people who've ever been in space come back full of microscopic holes where teeny tiny bits of matter went flying through them at half the speed of light?
surely being in space too long has to be really bad for you, i mean even with all the layers of protection that they have nowadays it still doesnt beat a couple miles thick layer of ozone....
i mean whats the point in travelling out to the belt to do some sightseeing if you come back aged forty years and with a tumour the size of a grapefruit?