<prompt> Qedela lo musho olandelayo: Ngo-1912, uVesto Slipher wathola ukuthi ukukhanya okuvela ezinkanyezini ezikude kwakushintshelwa ebomvu, okwakuthiwa  <response>: Kamuva lahunyushwa ngokuthi ama-galaxy asuka eMhlabeni. Ngo-1922, uAlexander Friedmann wasebenzisa izibalo zika-Einstein ukuze anikeze ubufakazi obungokombono bokuthi indawo yonke iyanda. Ngo-1927, uGeorges Lemaître ngokuzimela wafinyelela esiphethweni esifana nesikaFriedmann ngesisekelo semfundiso, futhi wanikeza nobufakazi bokuqala bokubheka ubudlelwane obuqondile phakathi kwebanga lezinkanyezi nesivinini sazo sokuhlehla. U-Edwin Hubble waqinisekisa lokho okwatholakala uLemaître ngemva kweminyaka emibili. Uma sicabanga ngesimiso sezinto ezisemkhathini, lokhu okutholakele kungasho ukuthi yonke imithala isuka komunye nomunye. 