  The Euler equation has been accepted as the basic postulate of stellar
physics long before the plasma physics was developed. The existence of
electrical interaction between particles of interstellar plasma poses the
question, how this interaction must be accounted for. We argue that the right
way is in formulation of a new postulate. On the base of the new postulate, the
theory of a hot star interior is developed. Using this theory we obtain the
distribution of stars over their masses and mass-radius, mass-temperature and
mass-luminosity dependencies. All these theoretical predictions are in a good
agreement with the known measurement data, which confirms the validity of the
new postulate.
