Whakakihia te rerenga e whai ake nei: I kitea wawe a Cepheids i etahi atu tupuni, penei i a Andromeda (ina koa na Edwin Hubble i te 1923<unk>24), a he waahanga nui o te taunakitanga ko nga "nebulae porohita" he tupuni motuhake kei waho atu o to tatou Milky Way. Na, ko te kitenga a Leavitt ka huri tonu i to tatou pikitia o te ao, i te mea i akiaki ia i a Harlow Shapley ki te neke i to tatou Ra mai i te pokapū o te kopu i te "
Great Debate" me Edwin Hubble ki te neke i to tatou tupuni i te pokapū o te ao.