<prompt> Pedzisa mutsara unotevera: Muna 1912, Vesto Slipher akawana kuti chiedza chinobva kumapoka enyeredzi ari kure chakanga chadzoserwa kumutsvuku, uko kwakanga kuri  <response>: gare gare yakadudzirwa semapoka enyeredzi ari kubva paNyika. Muna 1922, Alexander Friedmann akashandisa Einstein field equations kuti ape ufakazi hwokurangarira hwokuti zvinhu zvose zviri kuwedzera. Muna 1927, Georges Lemaître akazvimiririra akasvika pamhedziso yakafanana naFriedmann pahwaro hwepfungwa, uye akapawo humbowo hwekutanga hwekucherechedza hwehukama hwakananga pakati penzvimbo kumapoka enyeredzi nekumhanyisa kwavo. Edwin Hubble akasimbisa zvakawanikwa naLemaître nokucherechedza makore maviri gare gare. Tichifunga nezvenheyo yokudenga, izvi zvakawanwa zvaizoreva kuti mapoka enyeredzi ose ari kubva kune mumwe nomumwe. 