nKant,
Laplace, Gold, Hoyle are proponents.
nPlanets are
a natural by-product of star-formation under
certain conditions.
nThis model
is generally favored today.
nIt
naturally explains features of mass, angular momentum, orbit & composition mentioned earlier.
nIt predicts
planets will be relatively common, now known
to be the case.
nLetŐs
examine this model in some detail.