Molecules are unpacked into atoms, atoms — into kernels, electrons and other particles. In the active zone, and under its action in the star bowels, there is a nuclear packing and radiation — the emission of part of the gas-plasma mix substance into the space. That means that part of the gas-plasma mix substance, is thrown out in a space from the external party, forming the crown of the star. Part of the star matter, is compressed the inside, pressed by gravity and gathers in the center of the star kernel, forming «the white dwarf» and superseding the compressed fuel.  
Loss of weight of the gas-plasma mix is compensated by the transition of part of the weight from the compressed fuel which is being the star kernel, into the structure of gas-plasma mix. It is probable that in the kernel, in the compressed fuel, as well as in the formed «white dwarf», nuclear reaction occurs, under the action of temperature, pressure and dynamic processes. These processes go on in the star until all the compressed fuel will transfer into the structure of gas-plasma mix. In this case, the star kernel will consist of «the white dwarf», the «slags» collected in the center of a star. Participation of «slags» in the synthesis occurs with energy absorption, which directs on the reduction of equilibration power in a star. From the external party, the allocated energy dissipates into space; inside the same quantity of energy goes for the maintenance of thermonuclear synthesis of easy kernels and is absorbed in process of synthesis (packing) heavy kernels.

                                                                                      (61)  Figure №R-4.10

                                                                               (62)  Figure №R-4.11

In figures №R-4.8, №R-4.9, №R-4.10, №R-4.11, the possible development of the White Dwarf, in a kernel of a star during its life it is shown. As we see in figure №R-4.8: in the initial stage of kernel life of a star consists of the compressed fuel — hydrogen, later the White Dwarf (fig. №R-4.9) starts to form in the center of the kernel.
 As years pass by, the sizes of «the white dwarf» increase (fig. №R-4.10), and by the end of life, «the white dwarf» borrows all the volume of the star kernel, and the compressed fuel passes into the structure of gas-plasma mix (fig. №R-4.11).
What occurs to the star after? Will all the compressed fuel pass into the structure of gas-plasma mix?
It is possible to respond to this question only after physical and mathematical processes modeling.
Where does the synthesis of hydrogen begin at the moment of birth of star? In the center or on the surface, we do not know for now.
We consider that the synthesis begins in the top layers of the star, as a result of dynamic processes at concentration of matter. It is specified with different stars weight. We shall disassemble the possible variants in other sections.
But our opinion is not law of the nature. We should consider a case, when the synthesis of hydrogen begins in the center of a star.

As strange as it is, even at the beginning of thermonuclear synthesis in star kernel, or on the surface of a kernel, the epicenter of the synthesis rises in its top layers.

Why?

In the volume of «the active zone» a thermonuclear synthesis occurs, and the matter is in a plasma state. That means that the matter is unpacked as possible, the mass unit borrows the greatest volume possible. The Archimedes force operates on this volume. This force supersedes the volume of plasma on the surface where the density is minimal.

   As we stated earlier, in the kernel of the star slags gather, and under the action of dynamic pressure are being pressed in «the White dwarf».

It is probable, that in the star kernel, above the surface of «the white dwarf», the layer of the compressed fuel, a layer of molecules and atoms of easy elements — hydrogen, helium, and others is located. That means, the sphere made from slags — «the white dwarf» is shipped in a sphere of greater radius, consisted of the compressed fuel.

The areas where thermonuclear syntheses occur are rising up to the top layers of the atmosphere.

But these are hypotheses of possible succession of events.

Only all-around analysis of the received data can give the real picture researches and.

In «the active zone» energy is allocated in all parties, because of the spherical form, part of it goes to the center of the star, and other part goes in the opposite direction – into space in a radial direction.

Probably, the allocation of energy in space is compensated by the allocation of energy inside of the stars. From the position of classical physics it is obvious, although exact research data is not available to us.

The energy allocated in space dissipates, the energy allocated inside the stars concentrates, being accumulated and packed into weight, integrating kernels of atoms and pressing them in the star kernel — «the white dwarf». Integration of weights of kernels goes with the absorption of energy, at the synthesis of heavy and over heavy kernels.

Let’s try to predict, in what state there is matter in the stars kernel?

Most likely, the state of the star kernel depends on the sizes and parameters of the star, and some variants are quite possible.

According to the helioseismology, the kernel of the Sun behaves as a firm sphere.

The mankind still does not have the experience of conducting a research of a state of the matter in such extreme conditions, as inside of a star.

And exact data about the conditions inside of the Sun and stars aren’t available to us.

But we can predict some variants of the matter state in the kernel of the Sun.

Considering that there is high temperature in the kernel of the Sun, as well as high pressure and density (how high? we do not know these parameters), the matter in the kernel can be:

 — In a firm state;

 — In the liquid, fused state;

 — Or part of the matter is in firm state, and the other part in liquid.

Let’s consider the situation, when on the surface of the kernel, a matter is liquid — the fused state, and in the nutria it is firm. Probably, many will tell that inside of the kernel the pressure should reach huge values, and that processes related in terms of physics to «a gravitational collapse» are possible. But the existence of such physical phenomenon as «a gravitational collapse» is not proved, and will be not proved since such phenomenon does not exist.                                        

But there are peculiarities of different forms of a matter. The liquid state of matter is very difficult and poorly compressed, has peculiarity, because of bad compressibility, instantly to transfer changes of pressure and to distribute it in regular intervals in the environment.
That means, if the liquid state is on the surface of the kernel, changes of pressure in the gas-plasma mix are transferred the matter in a liquid state to the kernel surface, where (the matter in the liquid state) aspire to distribute, loading on all the surface of a firm kernel, in regular intervals. In a firm sphere, the loading connected with pressure will be distributed only in the top layers, and with the increase of depth, the loading decreases (the egg is an example of such distribution of loading). 
Hence, the infinite increase in the pressure in a firm body does not occur. All loading is distributed in the thin top layer of the firm sphere. Probably, under the action of temperature, the kernel represents the fused liquid sphere. In this case, the pressure in the sphere will be limited by the pressure upon surface and the weight of layers higher than the point we’re interested in. That means that the infinite growth of pressure in the kernel with approach the center, is not supposed to happen.

But the exact answer can be received only by modulating physical processes or improving methods and measuring techniques for the research of space objects.                                                    

What is it, the kernel of a star — firm, liquid or gaseous, we don’t know for now. Combinations of different states of a matter are possible.