<prompt> Nyora kupfuurira kweiyi ndima - Muna 1920, Nhaurirano Huru  <response>: pakati paHarlow Shapley naCurtis, pamusoro pechimiro cheMilky Way, spiral nebulae, uye ukuru hweZvakasikwa. Kuti atsigire kutaura kwake kwokuti Great Andromeda Nebula M31 yaiva nyeredzi yokunze, Curtis akacherechedzawo kuoneka kwemigwagwa yakasviba yakafanana nemakore eguruva ari mugwara redu renzou, pamwe chete nokuchinja kunokosha kwaDoppler. Muna 1922 Ernst Öpik akapa nzira yakangwara uye yakapfava yeastrophysical yokufungidzira chinhambwe cheM31. Mugumisiro wake wakaisa Andromeda Nebula kure kunze kwedenderedzwa redu renyeredzi pakureba kweanenge 450,000 parsec, inova inenge 1,500,000 ly. Edwin Hubble akagadzirisa gakava pamusoro pokuti mamwe mapoka enyeredzi aripo here muna 1925 paakaziva nyeredzi dzinosiyana-siyana dzeCepheid dzokunze kwemapoka enyeredzi kwenguva yokutanga pamifananidzo yomuchadenga yaM31. Izvi zvakagadzirwa pachishandiswa Hooker telescope ine urefu hwemamita 2,5 100 inches, uye zvakaita kuti zvibvire kuziva chinhambwe cheGreat Andromeda Nebula. Kuyera kwake kwakaratidza zvakajeka kuti chinhu ichi chakanga chisiri boka renyeredzi negasi riri mugalaxy yedu, asi renyeredzi yakaparadzana zvachose iri kure zvikuru neyedu. Izvi zvakaratidza kuvapo kwemamwe mapoka enyeredzi. 