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A comment on The possible disappearance of a massive star in the galaxy PHL 293B. Parent comment

Re:The possible disappearance of a massive star in the galax... by marcosdumay on Wednesday July 01, 2020 @09:20AM (#23700990)
A Dyson sphere/swarm has huge emissions on the infrared band that would be easy to detect on the tens of millions of light years distance.

Edit: AFAIK, this group didn't look for that. But the fact that nobody ever found one is telling.

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