<prompt> Bhala okuqhubekayo kwalesi sigaba - Ngo-1913, u-Ejnar Hertzsprung wazama ukuthola ama-Cefeid angu-13 esebenzisa ukunyakaza esibhakabhakeni. Nokho, ucwaningo lwakhe lwaluzodinga ukubuyekezwa kamuva. Ngo-1918, uHarlow Shapley wasebenzisa i - Cepheid ukuze abeke imingcele yokuqala ngosayizi nokuma komthala i - Milky Way, kanye nokuma kweLanga lethu kuwo. Ngo-1924, u-Edwin Hubble wasungula ibanga eliya eziguquguqukayo ze-Cepheid zakudala emthaleni i-Andromeda, kuze kube yileso sikhathi eyaziwa ngokuthi i- Andromeda Nebula, futhi wabonisa ukuthi lezi ziguquguqukayo zazingeyona ingxenye ye-Milky Way. Ukutholakala kukaHubble kwaxazulula umbuzo owaphakanyiswa Kwempikiswano Enkulu  <response>: ukuthi iMilky Way yayimelela yonke indawo yonke noma yayimane nje ingenye yemithala eminingi endaweni yonke. 