Its concentric cylindrical design would allow entire living zones to spin, creating centrifugal force sufficient to anchor residents to the floor. Given its staggering mass — estimated at 2.4 billion tons — Chrysalis would be constructed not on Earth, but in space. A genetic bank of seeds, embryos and DNA would accompany the humans onboard, ensuring biological continuity and enabling eventual planetary colonization. The idea has gained renewed interest amid growing concerns about planetary habitability and the long-term future of life on Earth. If Elon Musk’s Starship hints at near-term interplanetary migration, Chrysalis imagines a further frontier — one where humanity lives in motion, not anchored to any world.