Kammala wannan magana: A shekara ta 1913, Ejnar Hertzsprung ya yi ƙoƙari ya sami nisa zuwa 13 Cepheids ta amfani da motsi ta sama. Amma, daga baya ya bukaci a sake nazarin binciken da ya yi. A cikin 1918, Harlow Shapley ya yi amfani da Cepheids don sanya ƙuntatawa na farko akan girman da siffar Milky Way, da kuma sanyawar Rana a ciki. A cikin 1924, Edwin Hubble ya kafa nisa zuwa masu canjin Cepheid na gargajiya a cikin Galaxy na Andromeda, har sai da aka sani da "Andromeda" "Nebula", kuma ya nuna cewa masu canji ba membobin Milky Way bane. Ganowar Hubble ta warware tambayar da aka yi a cikin "
Babban Muhawara" na ko Milky Way wakiltar dukan Universe ko kuma kawai daya daga cikin mutane da yawa taurari a cikin Universe.