  The Capture Theory gives planet production through a tidal interaction
between a condensed star and a diffuse protostar within a dense embedded
cluster. Initial extensive and highly eccentric planetary orbits round-off and
decay in a circumstellar disk of material captured from the protostar.
Collapsing protoplanets leave behind a circumplanetary disk within which
satellites form by an accretion process. Many properties of exoplanets: orbits
very close to and very far from stars, highly eccentric orbits, planets around
binary stars, the proportion of stars with planets and spin-orbit misalignments
are straightforwardly explained in terms of this model. It is proposed that the
initial Solar System contained six major planets, the existing four plus
Bellona of mass 2.5 MJ and Enyo of mass 1.9 MJ, where MJ is the mass of
Jupiter. The products of a collision between the two additional planets explain
many features of the Solar System: the larger terrestrial planets, Mars and
Mercury and their characteristics, the Earth-Moon relationship and the surface
features of the Moon, the formation of asteroids, comets and dwarf planets, the
formation of the Kuiper Belt and Oort Cloud, the relationship between Neptune,
Pluto and Triton, the characteristics of ice-giants and isotopic anomalies in
meteorites. All the mechanisms involved in these processes are well understood
and occur in other astronomical contexts.
