misha00 wrote:
Axeman wrote:
misha00 wrote:
how much money would it cost to create a spaceship with endless supplies of energy/food in 20 years time?
Is it possible that humanity could survive in space if earth became uninhabitable?
No. Not for long term because of the radiation.
really the radiation couldn't be blocked by suits/ spacecraft?
Nope - a lot of the radiation in space is a LOT more intense than that. The ISS is only "safe" cos it's inside the earth's magnetosphere, which protects us. We have no shielding as of yet, other than maybe miles and miles of solid rock, that can withstand a lot of the solar radiation that comes from the sun. Jupiter's magnetosphere is so powerful, it cooks anything we've sent to go study it. It even cooks a few of it's moons. You could avoid most of it by going to the outer solar system, but you still have to get there, and you're just avoiding it, not shielded from it.
Spaceships are, at the best of times, fragile delicate intricate bubbles of life, that don't take much to make them un-livable. Finite air, food, water, possibly power. If they fall short, get lost, go bad, get damaged, etc, you can't exactly pull over to a space-rest-stop and call space-triple-A for a space-tow. Plants and air recyclers are great, so long as they function, and you have hull integrity. Hull punctures, debris strikes, things-going-wrong in general, even if you patch the hull, seal the leak, you've still potentially lost all your air or water, with no real way of getting it back.
29 Nov 2021, 5:19 pm
