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Worldbuilding

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    $\begingroup$ Let me recommend you read Heaven's River by Dennis E. Taylor. His science is excellent, and the primary subject of the novel is a topopolis. It's really the topopolis equivalent of Ringworld. $\endgroup$ Commented Aug 4, 2025 at 16:17
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    $\begingroup$ It will be very difficult if not impossible to satisfy both infinitely looping and always up (without things like anti- anti-gravity). These rotating habitats simulate gravity with centrifugal force which positively increase with radius and angular velocity. While you can constantly and slowly increase the radius of the habitat to make gravity increase, when you loop back, the radius will be small. Similarly, if one section is rotating quickly, once you loop back, you must slow it down because you ended up the same place you started, where gravity is lower. $\endgroup$ Commented Aug 8, 2025 at 14:22