The theory is presented which gives for the first time the description
of the Sun as a quantum object with the use of spherical exciton's co
nception. The main part of results can be applied also to many other p
lasma objects such as stars of different type, spherical lightnings, e
lectron-hole drops in semiconductors, etc. There are calculated the mi
nimum number of particles needed for stability of Sun, its total lumin
osity, and constant of ''gravitational'' interaction. The latter means
that, in fact, new theory of gravity is created. Also, the connection
of the spherical exciton with usual hydrogen atom as two different li
mits in the consideration of two-particle Schredinger equation is show
n.