Surprisingly, some Dyson spheres and ringworlds can be stable
https://phys.org/news/2025-03-dyson-spheres-ringworlds-stable.htmlOpen linkView original on lemmy.sdf.orgSyndicated from the fediverse. Read and engage on the original instance.
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https://phys.org/news/2025-03-dyson-spheres-ringworlds-stable.htmlOpen linkView original on lemmy.sdf.org
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iirc, Niven once said he had to do so many Ringworld sequels because those meddling kids kept noticing problems with the science. In the first sequel he added ramjets to the edges to help with stability.