How does this theory fit the characteristics of the Solar System?
4d. The terrestrial planets released their atmospheres from their interiors. The Jovian planets captured theirs. The icy planets weren’t massive enough to capture one, or hot enough to release one.
4e. The inner structure of the planets is explained by differentiation. Heavier elements sink to the core. Lighter ones float to the surface.
5. Asteroids and comets are left over planetesimals. Meteors are bits of dust that have fallen off of comets
6. Everything is the same age because it all formed at about the same time.
What about the exceptions?