Through faith we understand that the worlds were framed by the word of God,
Hebrews 11:3
"A paper in Icarus seeks once again to model the four large Jupiter moons (Io, Europa, Ganymede and Callisto)—each one distinct and different from the others—with a secular bottom-up planetesimal model, only to confess, “However, bodies as massive as Ganymede and those located far away from Jupiter, such as Callisto, are difficult to form with this scenario.” The realities of gas drag and migration make keeping the pieces together very challenging." CEH