Rangarira ndima iri pasi apa uye ipapo pindura mubvunzo gare gare mumutauro mumwe chetewo sechikamu:  Passage: Henrietta Swan Leavitt (; 4 Chikunguru 1868 <unk> 12 Zvita 1921) akanga ari muongorori wezvomuchadenga weAmerica. Akazopedza kudzidza paRadcliffe College, akashanda paHarvard College Observatory se"kombiyuta", achiongorora mahwendefa emifananidzo kuti ayere uye anyore kupenya kwenyeredzi. Basa iri rakaita kuti awane ukama huri pakati pechiedza uye nguva yezvinhu zvinoshanduka zveCepheid. Kuwana kwaLeavitt kwakapa vazivi venyeredzi "mwenje wenguva dzose" wokutanga wokushandisa kuyera daro kumapoka enyeredzi ari kure. Pashure porufu rwake, Edwin Hubble akashandisa ukama hwaLeavitt hwokuti luminosity<unk>period, pamwe chete nokuchinja kwechiedza chenyeredzi kwakatanga kuyerwa naVesto Slipher paLowell Observatory, kuti aratidze kuti zvinhu zvose zviri kuwedzera (ona mutemo waHubble).  Mubvunzo: Basa rake raiva rei?
nyanzvi yokuongorora nyeredzi