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AnswerRe: Do you think it is possible for exoplanetary colonization?... Pin
Eddy Vluggen14-Feb-22 8:59
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Eek Ten Bears15-Feb-22 3:53
Eek Ten Bears15-Feb-22 3:53 
It amazes me how narrow minded scientists and engineers get. They always say "can't" when really they just haven't thought it through.

Yes you could build a craft that would take you safely(ish). It would be a big craft, very big in fact, but we could build one now(ish) if the will was there. So previous calculations I did when I was bored and young and still remembered my first degree told me a radius of 3km and a length of around 6km would be ideal. The design would be a cigar shaped superstructure providing magnetic shielding, round disk shaped components providing accommodation, storage and everything else, the whole thing would be hollow down the central axis. Each of the saucer sections could leave the superstructure in sequence. A bit like the dream of a UFologist but with some badly thought out science behind it. Big problem is building the spacestation you will use to construct the star ship from - quite a few launches, 1000s in fact. I think it was 3000 I calculated. I think I also assumed you'd go off and mine an asteroid for the actual starship materials as a money saving measure. Do we have a government or eccentric billionaire willing to spend fortunes in launching 3000 missions to construct what is a very nice space station but essentially is nothing more than a big factory unit? OK lets say we do....

Main problem is time, it will take a long time, plus you will need to fire and forget pretty much and hope you aimed at a good target. Actually you won't your grandchildren need to hope that.
Not sure how you would feed the populace, even allowing for some form of whacky most-of-the-passengers-in-suspended-animation state (which we might develop but might not in the same way as we might develop rocket boots but might not). LEDs are a good light source, power is a problem, you could interact with the solar wind whilst in the solar system and maybe get similar from the interstellar medium but you'd probably want to take a nuclear power station with you for emergencies and that has a whole range of its own problems.
Speaking of radiation, it isn't the huge deal that the "we couldn't fly to Mars" negativists make it, Solar wind and in fact Galactic wind can be shielded - see above note about the spacecraft being very big - it needs to be very big. Gamma ray bursts would get you, so you'd want to avoid them, but you can't so why worry?

Where? Somewhere close, it'll take about many years to get anywhere good so anywhere that will do.
GeneralRe: Do you think it is possible for exoplanetary colonization?... Pin
trønderen15-Feb-22 4:36
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