Is the colonisation of space, a realistic and achievable goal?
Biospheres have been built and tested and although they weren’t 100% successful, they were close enough to say, with some certainty, that extra-terrestrial bio-sphere’s will be possible inside the next century. These extra-terrestrial biosphere’s could be established on space-stations, earth-sized planets or even space cruisers. Advances of nanotechnology and genetic engineering we will have the technology to develop our bodies for a life spent in micro-gravity so even if the journey to a habitable planet is indefinitely long, a space cruiser with a biosphere capable of accomodating the population of a town will be fit for the purpose. Personally I don’t believe we will exhaust our natural resources in the forseeable future. We will continue to have an abundant power supply so long as we have the sun. So long as we have organisms that live and die, we will be able to fertilise the soil and scrub the carbon dioxide from the air. Surely terraforming a polluted earth would be easier than
