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Blackhole starlifting makes more sense to me than Dyson spheres (see section on star lifting): https://arxiv.org/abs/1104.4362 https://arxiv.org/abs/1104.4362
by dave_sullivan 10y ago
Blackhole starlifting makes more sense to me than Dyson spheres (see section on star lifting): https://arxiv.org/abs/1104.4362 https://arxiv.org/abs/1104.4362
> Importantly, researchers have concluded that a thin accretion disk around a rotating black hole is the most efficient power source in the universe , a process up to ~50 times more efficient than nuclear fusion occurring in stars (e.g. Thorne 1974; Narayan and Quataert 2005). If any civilization is to climb the Kardashev scale, it would certainly at some point want to master that energetic source. We call such an endeavor black hole star lifting
Instead of a Dyson sphere, you're using a black hole (and apparent mastery of gravity) to leech energy directly from the sun.
- fuzzythinker 10y agoOne can't get to the most efficient energy source without bootstrapping. And dyson swarms may be one of the easier ways to get there. I like this video [1] that explains this pretty well, from dyson swarms to kugelblitz. I do not understand enough from the paper to know the difference between kugelblitz and black hole star lifting though. [1] https://www.youtube.com/watch?v=jW55cViXu6s https://www.youtube.com/watch?v=jW55cViXu6s
- etatoby 10y agoPBS Space Time FTW! I'm waiting for their take on this star.
- ge96 10y agoAlright, now we know how that weapon works in Star Wars Ep 7
- fuzzythinker 10y agoYou mean like how the laser moves at approximately the speed of sound?
- ge96 10y agoShhh... That was for suspense, it's more of a "plasma slug" weapon