TheBarqaror interioryulduz ofich a stable star is in a state ofqismi [[hydrostaticgidrostatik equilibriummuvozanat]]dadir: thehar forcesqanday onkichik anyhajmdagi smallkuchlar volumebir-birini almost exactly counterbalance each otherkompensatsiyalaydi. TheMuvozanatlashgan balancedkuchlar forcesyulduz areichkarisiga inwardqaratilgan gravitationalgravitatsiyaviy forceva andtashqarisiga an outward force due to the pressureqaratilgan [[gradientgradiyent]] withinbosim the starkuchlaridir. The [[pressureBarik gradientgradiyent|Bosim gradiyenti]] is established by the temperatureplazma gradientharorati ofgradiyenti thetomonidan plasmabelgilanadi; theyulduz outertashqi partqismlari ofuning theyadrosidan star is cooler than the coresovuqroq. TheBosh temperatureketma-ketlikdagi atyoki thegigant coreyulduz ofyadrosidagi aharorat main— sequence or giant star is at least on the order ofkamida 10<sup>7</sup> [[kelvin|K]]. TheBosh resulting temperature and pressure at the hydrogenketma-burningketlik coreyulduzida ofvodorod ayoqilayotgan mainyadrodagi sequenceharorat starva are sufficient forbosim [[nucleartermoyadroviy fusionreaksiya]] to occur and for sufficient energy toolib beborish producedva toyulduz preventkollapsining furtheroldini collapseolish ofuchun theyetarli starboʻladi.<ref name="hansen">{{cite book | last1=Hansen | first1=Carl J. | last2=Kawaler | first2=Steven D. | last3=Trimble | first3=Virginia | pages=32–33 | title=Stellar Interiors | publisher=Springer | year=2004 | isbn=0-387-20089-4 }}</ref><ref name="Schwarzschild">{{cite book
| first=Martin | last=Schwarzschild | title=Structure and Evolution of the Stars | publisher=Princeton University Press | year=1958 | isbn=0-691-08044-5}}<!-- Book republished by Dover as ISBN 0-486-61479-4, but ISBN in the cite book template is the one as published by Prin. Univ. Press--></ref>
