Mt Holyoke AST 330 - Terraforming Mars (13 pages)

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Terraforming Mars



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Terraforming Mars

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Pages:
13
School:
Mount Holyoke College
Course:
Ast 330 - Spectroscopy of the Planets

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Terraforming Mars Wohoo Star Trek What is involved Terraforming process Time Cost Colonization Worth the effort Future interaction with space Terraforming Process What needs to be changed Temperature Pressure Oxygen Water Radiation Terraforming Process Temperature Currently 60C limitations must be 0 30C Introduction of Greenhouse Gases Orbiting Mirrors solar sail melting southern polar cap releasing CO2 total melt of polar cap results in 70 degree C increase Anaerobic micro organisms bacteria take in CO2 spit out O2 and methane or ammonia In situ factories pump out greenhouse gases from air and soil Decrease albedo dust or plants Terraforming Process Pressure currently 1 Earth s sea level 8 millibars pressure suits required Directly related to temperature increased by thickening the atmosphere CO2 from all of South polar cap and the regolith give pressure of 300millibars 1 3 Earth sea level Greenhouse effect could give a atmospheric pressure of one eighth to twice that of Earth s Terraforming Process Oxygen Currently 95 carbon dioxide Oxygen masks necessary Photosynthetic plants CO2 O2 Genetic engineering Timing require some O2 water Photosynthetic micro organisms CO2 O2 Few tough bacterial species Timing Terraforming Process Water Evidence of liquid water in past though none present today Heating of the planet should release much water northern polar cap regolith groundwater reserves Terraforming Process Radiation Once the atmosphere has been thickened there will be sufficient protection from radiation UV Solar Flares Cosmic Rays Terraforming Methods initial steps Green house effect Must raise the surface temp by at least 4 degrees to start a run away in situ industry greenhouse gases CFCs or PFCs perfluorides but requires in situ building and energy solar or nuclear Reducing albedo dust plants Double sun mirrors raise temp 5k s pole evaporation The run away would completely evaporate the S Polar cap in about a decade How long will it take Decades to millions of



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