Knut Lundmark wuxuu ahaa mid ka mid ah hormuudka daraasadda casriga ah ee xidigaha iyo masaafooyinkooda. Wuxuu ka mid ahaa dadkii ugu horeeyay ee ka shakisan in galaxyadu yihiin nidaamyo xiddigood oo fog fog oo aan ahayn waxyaabo u dhow oo ka tirsan galaxyadeena, Milky Way. Sanadkii 1919 wuxuu cabiray masaafada M31 <unk> Galaxy Andromeda, ilaa 650,000 sano iftiin (qiyaastii rubuc qiimaha maanta) isagoo adeegsanaya cabirrada novae ee laga helay M31 isla markaana isbarbar dhigaya kuwa u dhow kuwa leh masaafooyinka la yaqaan. Shaqada Lundmark waxay gacan ka geysatay doodda weyn ee caanka ah
Nebula-yada miyay yihiin Galaksiyada ama Gaaska Dabaalan?