"Ukuqhuma Okukhulu": kusho ukuthini?
Umbono we - Big Bang, osetshenziswa izazi zezinkanyezi ukuze zichaze imvelaphi yendawo yonke, uthi indawo yonke njengoba siyazi yaqala eminyakeni eyizigidigidi edlule ngokuqhuma okukhulu. Ngesikhathi salokhu kuqhuma, yonke into ekhona endaweni yonke namuhla yayigxile endaweni eyodwa.  Kusukela ngesikhathi sokuqhuma, izinto zaqala ukwanda futhi zisanda nanamuhla. Yingakho inkolelo-mbono ye-Big Bang ihlanganisa nenkolelo-mbono yokuthi indawo yonke iyanda. Ngaphezu kokwanda, izinto zaqala ukwakha izakhiwo eziyinkimbinkimbi ngokwengeziwe, kusukela kuma-athomu nakuma-molecule kuya ezintweni eziphilayo esizaziyo namuhla.  Igama elithi "Big Bang" laqala ukusetshenziswa isazi sesayensi yemvelo uFred Hoyle ngo-1949, owayengavumelani nalombono, ethanda imodeli yendawo yonke esesimweni esizinzile. Umqondo wokuqhuma okukhulu wawubonakala ungenangqondo kuHoyle.