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We might be seeing their impact on the galaxy all around us. How would we know? They might work on different (time)scales. Edit: I agree that SETI makes no sen
by wladimir 16y ago
We might be seeing their impact on the galaxy all around us. How would we know? They might work on different (time)scales.
Edit: I agree that SETI makes no sense to contact such entities though.
- khafra 16y agoAssuming such beings work on the same physics we do, they need massive amounts of energy to run a galactic civilization; and they have the same sources available that we do: Stars; and for extra credit black holes. Putting a dyson sphere around a star changes its energy output, shifting it far into the infrared. Putting a matrioshka brain around a star is even more dramatic a change--but it still has the same gravitational effect on other stars. But no, unfortunately that doesn't explain the effects of "dark matter."