posted on Feb, 2 2012 @ 12:55 PM
Originally posted by ZeskoWhirligan
Originally posted by Chamberf=6
Nada. Nothing. A big goose egg. Null set. Zero.
Ok that about covers what he has proven so far.
Um, pardon, but the OP's point about Human life withering and dying when taken away from the Earth HAS BEEN PROVEN, it's a major obstacle to manned
Hate to bust your cherries, but you're not gonna be flying around the solar system in little x-wing fighters or space pods or whatever... The further
away from the Earth you travel, the faster you die.
I would love to know why you have concluded that travel "farther away from the the Earth the faster you die" On what do you base that comment? Away
from the Earths magnetic field you have to be concerned with cosmic rays and the occasional large solar flare. But we are looking at ways to deal with
this, both with material-shielding, even water which is quite effective and could be used to power (as propellent) a nuclear thermal engine (like
NERVA). There is also a lot of research being done on cold&hot plasma shields. This makes the most sense since until we have regular access to space
to build craft, etc any mass taken from Earth is going to be expensive.
Another thing to consider with cosmic ray exposure is to limit the time it takes to get to Mar's for example. We have developed what is called a
VASIMER engine. This is a combination of magnetic acceleration of a conductive plasma, and supplementary ion drive. A VASIMER engine could get us to
Mar's in 39 days, not 6 months. This is also MUCH faster then nuclear thermal power. And the weight of getting a conventional thermal reactor to
space is problematic. I have heard we have by the way for orbital radar-sats. But can't confirm that.
Nuclear power using radio-isotopes is much simpler/lighter and has powered the Voyager probes plus our probes to Titan, etc. But you don't get very
much power in raw KW with this, so its fine for just powering on board electrical systems for unmanned probes since they use gravity assist to get
probes to the outer planets, or even Mar's. But you won't get enough to (likely) power a larger VASIMER or magneto-hydrodynamic propulsion system.
There may be ways around this, and you also have the potential for radio-isotopic generators charging a bank of cascade capacitors and various methods
of solar power.
And you will need artificial gravity to maintain health for unlimited time in zero G. Hence getting to Mar's in 39 days negates that need, and
simplifies space craft design. You would want artificial G for a space station if you are considering long term habitation.