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A comment on A Dyson sphere around a black hole. Parent comment

Re:A Dyson sphere around a black hole by devoutsalsa on Thursday August 19, 2021 @02:43AM (#28231072)
Solar panels?
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Re:A Dyson sphere around a black hole by andai on Thursday August 19, 2021 @03:44AM (#28231395)
How about a big ol' waterwheel?
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