The aim of this study consists in
the advancement of the author’s dichotomous hypothesis of hot origin of the solar system that is alternate to the well-known hypotheses of cold accretion.
The hypothesis proposes formation of solar planets and satellites through
dichotomous division of the superheated proto planetary mass ejected from the
youngest Sun due to strong non-equilibrium competition between gravitational
contraction and heat expansion.
Like the cold accretion hypotheses, the
dichotomous hypothesis also explains the key regularities of the solar system
structure (angular momentum distribution, position of the asteroid belt, back
rotation of Venus and Uranus, etc.). Besides, it offers explanation of new data on extra solar planetary systems that is difficult to understand basing on the gradual cold accretion process (in particular, the misaligned proto planetary
discs in the binary proto star IRS 43). Some predictions following of the given
explanation can be examined during future observations.