Suppose it's possible to build a Dyson Sphere. Would it be possible to convert enough of the energy of the star into a form of energy that we couldn't detect from light years away? Could they convert all the energy into mechanical and electrical energy (i.e., a giant computer), or use the energy of the star to make new matter? Or is it the case that no matter what you do, a Dyson Sphere is going to radiate a detectable amount of infrared energy?
via International Skeptics Forum http://ift.tt/1bkjvgt
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