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...A gas dynamics the nature of stars is complex and involves almost every aspect modern physics in this respect historical fact that it took mankind about half century to understand stellar structure evolution see sect seems quite complimenttoresearchers thoughthisstatementreectstheadvances rst th has be admitted much still needs understood even now years st for example manydenitions andprinciplesimportanttothephysics mature i e are already engaged their own nuclear energy production also relevant understanding formation though not designed as substitute textbook following sections may introduce or remind reader some very basic but most useful physical concepts noted these merely reviewed presented consistent pedagogic manner clouds ruled by laws thermodynamics follows principles ideal adiabatic polytropic gases derivatives many ways critical order express stability conditions contracting expanding crucial properly dene gaseous matter strictest sense monatomic an ensemble sametypeofparti...