If aliens landed today
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Join Date: Jun 2012
02-27-2013, 05:25 PM
A lot of fiction depicts aliens invading planet Earth to steal its resources, which I think isn't very realistic.
It takes a lot of energy to lift something out of a planet's gravity well. Look at the rockets NASA uses to put things into space. They have to strap rockets onto rockets, in order to get a shuttle into space. It takes a lot of energy. Having more advanced methods of propulsion doesn't change the amount of energy required. It might make it easier, but it will still be expensive. So I don't think enslaving/wiping out mankind to carry out strip mining projects would be at all realistic.
IMO any advanced alien civilization traveling the stars will be prolific asteroid miners. Asteroids have little to no gravity so there is little energy required to pull resources off of them.
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