Originally posted by: KraziKid
Originally posted by: warcrow
Actually, a base on Mars doesnt make as much sense as a base on the Moon. Mars is *way* too cold for us to inhabit (not to mention the bad radiation we would be bombarded with), but there is nothing scientist could do that a rover (robot) could not -and its cheaper.
I'm interested in the Moon because of the mining opportunities it presents. The Moon has minerals that scientist say are one million times for powerful than coal (the name eludes me now, but it was mentioned in an issue of Time 2 weeks ago), and would be less harmful to the atmosphere. This is a good thing. They are also saying that there is enough of these minerals to sustain the US for 1000 years. This is probably why Bush jumped on the recent aumentation of NASAs budget.
You're bombarded with more radiation on the Moon. Mars has an atmosphere while the Moon doesn't. The trip to Mars is where you experience more radiation, but once there, it isn't more than the Moon.
Types of radiation on the moon you are sheilded fairly well from the cosmic radiation ( 85% protons, 14% alpha particles.) On Mars it is with atmosphere, a hab, some dirt on top cosmic radiation is at earth levels. Exposure during space walks is higher but equal or less than ISS levels. Both have UV radiation in VERY high levels this is preventable with a simple space suit.
The moon does have He3 which is fuionable with heavy water deutrium. He3-H2 is the best fusion reaction there is in terms of energy output(slightly more than H3-H2), it also has very low neutron emmision and at lower energies then other reactions. We still need a working fusion plant to use it.
The moon has VERY little water, difficult to extract oxygen (high energy reaction), and 2 weeks dark/2 weeks light so plants would require sun lamps. Ever try and put sun lamps over a field of crops it is going to take TONS of energy. It does have the He3 and it is close. Iron, Titanium, ect in soil but as oxides which aren't easy to extract.
Mars has tons of water ice 20-50% right near the surface at the high lattitudes (Mars Odyessy). It also has all the metals possibly in veins becuae of geologic activity. Crops are growable there without sun lamps but UV resistant top is necessary. It also would be possible to tap geologic areas for geothermal power which would be easier than building a fusion plant on the moon. Although fission or radioisotope plants would be used on both. Mars has Co2 atmosphere which is easy to extract oxygen out of (lower energy).
Yes as Krazi said radiation risk are for GOING to Mars not being there, but about as risky as say 2-pack a day smoking for an equal time period. (52 rem exposure)
Mars is probably better for a large setllement but the moon has it's benefits too He3 / large telescope, soil metals.
Good luck finding life on Mars with a rover it will be sterilizd by UV at the surface. A (several hundered day) manned mission would do more than a 1000 rovers.
Thanks for the new desktop

replaced my old pic by ESA's Mars Express