<prompt> Qedela umusho olandelayo: Ngokushesha kwaqashelwa ama-cepheid kweminye imithala, njenge-Andromeda ikakhulukazi u-Edwin Hubble ngo-192324, futhi aba yingxenye ebalulekile yobufakazi bokuthi ama-nebulae angama-spiral ayi imithala ezimele etholakala kude ngaphandle komthala wethu i-Milky Way. Ngakho, ukutholakala kukaLeavitt kwakuzoshintsha isithombe sethu sendawo yonke kuze kube phakade, njengoba kwashukumisela uHarlow Shapley ukuba asuse iLanga lethu enkabeni yomthala  <response>: I-Great Debate no-Edwin Hubble ukuze bahambise umthala wethu usuke enkabeni yendawo yonke. 