Henrietta Swan Leavitt (; 4 Chikunguru 1868 <unk> 12 Zvita 1921) aiva muongorori wezvemuchadenga wekuAmerica. Akapedza kudzidza kuRadcliffe College, akashanda kuHarvard College Observatory se "komputa", aine basa rekuongorora mahwendefa emifananidzo kuitira kuyera nekunyora kupenya kwenyeredzi. Iri basa rakatungamira kuti awane hukama pakati pechiedza uye nguva yezvinhu zvinoshanduka zveCephid. Kuwanikwa kwaLeavitt kwakapa vazivi venyeredzi "mwenje wenguva dzose" wekutanga kuyera chinhambwe chemagalaxies ari kure. Mushure mekufa kwake, Edwin Hubble akashandisa hukama hweLeavitt's luminosity<unk>period, pamwe ne galactic spectral shifts yakatanga kuyerwa naVesto Slipherwell kuLowell Observatory, kuitira kuti aratidze kuti zvakasikwa zviri kuwedzera (ona Mubvunzo waHubble: Chii chaive basa rake mutemo?
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