Can the theory of formation of the solar system explain all the observables?
Is there any theory of the origin of Solar system which can explain these three things: 1) The chemical elements distribution between different planets (the Sun has very little of heavy elements, Venus and Earth lots of it, Jupiter and Saturn have little again); This is explained by the Lewis Model. In the early Solar System, which was a cloud of gasses, the inner parts were warmer than the outer parts. In the inner region, only things like metal or rock could condense, so the inner planets (Mercury, Venus, Earth, and Mars) are composed chiefly of metal and rock. As you move out to the cooler outer regions, it gets cool enough for things like water ice, and then ammonia and methane ice to condense. The reason why the outer layers of the gas giants (Jupiter, Saturn, Uranus, and Neptune) are composed of lighter elements is that these planets grew larger than the Earth, quickly. There are two reasons why. One is that, in the outer regions, it was cool enough for a larger range of material
