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In article ,
Elroy Willis wrote: Lack of gravity is an asset. You can make perfectly round ball bearings, handle materials with more ease... I think planets and gravity wells are overrated. Gravity is good for your health, unfortunately. And radiation bad for it, also unfortunately. Apparently so-called "cosmic" radiation will be a real problem for interplanetary travel. Not so much for the ISS in LEO, since it's well within the Earth's magnetic field. On the other hand, there was a recent paper on antioxidant therapy to reduce the deleterious effects of ionizing radiation. I watched an interview with some of the first astronauts, and they all reported seeing random flashes of light that they couldn't explain at first. Turns out it was cosmic rays hitting their optic nerves and frying them. They weren't exposed long enough to do heavy damage, but it shows how dangerous it can be out there without some kind of good shielding. I'm wondering how many mutated babies would be born in space since the cosmic rays can alter the DNA in sperm and egg cells. 20 years on a ship going to some nearby star would be a long enough time to alter quite a few cells. Send people who hate children ![]() |
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