Hacker News Reader

> A hypothetical megastructure Dyson's sphere would not radiate heat

Could you elaborate why not? All current technology I know of has an efficiency of <100%, with waste energy being lost as heat (which in space would be radiated away in the infrared spectrum). Why would this not be the case for a hypothetical dyson sphere or swarm?

View on HN

Because the topic isn't about heat per se but heat signatures and detecting artificial heat signatures across the universe.

Of course everything radiates heat I did not think I have to get down to that level in commenting here.

Sorry, I don't understand you either. Without new physics Dyson spheres radiate heat. Therefore they are detectable.

Reply on news.ycombinator.com