Actually this is a more immediate problem then you might think. I agree that we need start worrying about other problems (climate change, epidemic, ourselves) but there is still a definite risk of NEO's hitting Earth. NASA knows of plenty of risks and has them laid out in a chart here http://neo.jpl.nasa.gov/risk/. If my memory serves me right (this is based on information my roommate told me who worked for NASA at the time) there is an object that will pass by Earth late 2012 and when it does scientist will be able to get a very good picture of when they think it will hit Earth (I think the range of potential hit fates starts in 2020 and continues on from there but the likelihood is very very small any given year but still present). So yeah, a nice off world site would be nice but we really don't have the time/technology to do it right now (or potentially ever).
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Actually this is a more immediate problem then you might think. I agree that we need start worrying about other problems (climate change, epidemic, ourselves) but there is still a definite risk of NEO's hitting Earth. NASA knows of plenty of risks and has them laid out in a chart here http://neo.jpl.nasa.gov/risk/. If my memory serves me right (this is based on information my roommate told me who worked for NASA at the time) there is an object that will pass by Earth late 2012 and when it does scientist will be able to get a very good picture of when they think it will hit Earth (I think the range of potential hit fates starts in 2020 and continues on from there but the likelihood is very very small any given year but still present). So yeah, a nice off world site would be nice but we really don't have the time/technology to do it right now (or potentially ever).