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Originally Posted by BigPoppa
WE ARE NOT COLONIZING ****ING MARS
That is an idiotic sci fi fantasy, and it is ridiculous that anyone would use it as justification for spending billions and billions on exploring the idea.
Of course, it's sci fi. Men visiting the moon would likewise be sci fi if politicians like Bernie Sanders had their way in the 60s. The question is can it be accomplished. The answer is yes if the proper technologies are developed and honed to bring down space travel costs. SpaceX is doing that currently, but NASA should be as well. They'd better be able to do this tech R&D if given at least 1% of the federal budget, as opposed to their current 0.47%. Bernie would probably cut it down to an even lower level, further hampering this type of tech development.
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We already have a planet (complete with oxygen, plants, and animals) we're perfectly adapted to. We're never terraforming Mars into anything even close.
Extinction events, how do they work? In addition to asteroids (only some of which we are tracking and could see coming), gamma ray bursts (which we cannot see coming), and near earth supernovas, there also human introduced existential risks such as nuclear war, and biological weaponry that could devastate humanity on this planet. Even without the human related events, these EEs happen frequently enough on Earth that we should try to find an insurance policy of sorts.
http://www.users.globalnet.co.uk/~mfogg/zubrin.htm
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It is concluded that a drastic modification of Martian conditions can be achieved using 21st century technology. The Mars so produced will closely resemble the conditions existing on the primitive Mars. Humans operating on the surface of such a Mars would require breathing gear, but pressure suits would be unnecessary. With outside atmospheric pressures raised, it will be possible to create large dwelling areas by means of very large inflatable structures. Average temperatures could be above the freezing point of water for significant regions during portions of the year, enabling the growth of plant life in the open. The spread of plants could produce enough oxygen to make Mars habitable for animals in several millennia. More rapid oxygenation would require engineering efforts supported by multi-terrawatt power sources. It is speculated that the desire to speed the terraforming of Mars will be a driver for developing such technologies, which in turn will define a leap in human power over nature as dramatic as that which accompanied the creation of post-Renaissance industrial civilization.
Terraforming would take 1000+ years, which sound like a long time bc we are individual humans who live 50-100 years. But in geologic timescales and in the timescale of the entire human species (anatomically modern humans have been around for 200,000 years) it really isn't.
Last edited by STA654; 08-21-2015 at 12:03 PM.