| http://www.w3.org/ns/prov#value | - Of course, if there is a space-borne disaster like a massive comet or asteroid impact, or the sun acts up, or a gamma ray burst sweeps over us, or a supernova happens too close to us, then we could be wiped out completely, but we???re not more than 50 years away from being able to defend against the only one of those that is likely to happen in the next few hundred years (the asteroid/comet impact
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