q-bio.PE2026-07-131 minarXiv:2607.11011expressHow a Tumor Builds Its Family TreeEvery tumor writes its own cosmology. Its cells are galaxies, and mutations are stellar flares marking the branches of a genealogical tree. The key to its history is the rhythm of accumulating genetic typos.Meng Wang·Zhangchi Weng·Jasmine Foo·Zicheng WangCecilia Payne-GaposchkinEdwin HubbleFred Hoylegalactic evolutionphylogenetic networkevolutionstellar evolutionmutation👍👎☆SimplePopularAdvanced