Passage: Dayaxyada ay ogaadeen Galileo <unk> Io, Europa, Ganymede, iyo Callisto <unk> waxay ka mid yihiin dayaxyada ugu waaweyn ee Nidaamka Qorraxda. Orbitalka saddex ka mid ah (Io, Europa, iyo Ganymede) waxay sameeyaan qaab loo yaqaan Laplace resonance; afartii wareeg ee Io ku wareegsan Jupiter, Europa waxay sameysaa si sax ah laba wareeg oo Ganymede waxay sameysaa si sax ah mid.
saddex