<prompt> Shapleyye suro Great Debate dәn bakta ro ruwozәna.  <response>: Heber D. Curtis-a kǝla alawu nebula-a galaxies-a kuru nǝmkura Dunyabedǝyen. Kǝla lamar shimadǝbe dǝ kǝntagǝ Aprilbe kawunzǝ 26, 1920 lan, suro hall of the United States National Academy of Sciences ye dǝn suro Washington DC yen. Shapleybe raayinzədə shi spiral nebuladə kǝmadǝro galaxies lan bowotindǝ suro Milky Wayben kara, kuru Curtisbe raayinzǝdǝ shi spiral nebuladə island universes dǝwo diya Milky Wayben kara kuru nǝmkura-a kuru futu-a Milky Waybe-a dǝga kalkaljin. Kalma adǝa kuru gashiptǝdǝ shima badiyaram extragalactic astronomybedǝwo, kuru bayanna bayantǝbe-a kuru bayanna ngǝwu-a, ngǝwusoro kalkallo gǝnyi-a, 1921lan kǝlzǝna. 