  In a previous investigation, the orbital radii of regular satellites of
Uranus, Jupiter, Neptune, and Saturn are shown to be directly related to photon
energies in the spectra of atomic and molecular hydrogen. To explain these
observations a model was developed involving stimulated radiative molecular
association (SRMA) reactions among photons and atoms in the protosatellite
disks of the planets. In the present investigation, the previously developed
model is applied to the planets and important satellites of the Sun. A key
component of the model involves resonance associated with SRMA. Through this
resonance, thermal energy is extracted from the protosun's protoplanetary disk
at specific distances from the protosun wherever there is a match between the
local thermal energy of the disk and the energy of photons impinging on the
disk. Orbital radii of the planets and satellites are related to photon
energies ($E_P$ values) in the spectrum of atomic hydrogen. An expression
determined previously is used to relate $E_P$ values to temperatures in the
disk. Results indicate the surface temperature of the protosun at the time when
the evolution of the planets begins is higher than the surface temperature of a
typical T Tauri star. The present investigation offers an explanation for the
existence of the asteroid and classical Kuiper belts and predicts that a
primordial belt once existed in the vicinity of Neptune. It also indicates that
Uranus is formed from two protoplanets and is thus consistent with the theory
that the large tilt of Uranus's axis of rotation was created by the collision
of two bodies.
