Yulduz: Versiyalar orasidagi farq

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Qator 870:
==Termoyadroviy reaksiya yoʻllari==
{{Main|Yulduz nukleosintezi}}
{{Multiple image|direction=vertical|align=right|image1=FusionintheSun.svg|image2=CNO Cycle.svg|width=200|caption1=Overview of the protonProton-proton chainzanjiri|caption2=The carbonUglerod-nitrogenazot-oxygenkislorod cyclesikli}}
Yulduzlar qaʼrida yulduz massasi va tarkibiga koʻra turli xil termoyadroviy reaksiyalar kechadi. Bu reaksiyalar majmuiga [[yulduz nukleosintezi]] deyiladi. Sintezlangan atom yadrosi sof massasi reagentlar massasi yigʻindisidan kichik. Qolgan massa [[massa va energiya ekvivalentligi]] (''E''&nbsp;=&nbsp;''mc''<sup>2</sup>) qonuniga binoan elektromagnit energiya sifatida ajralib chiqadi.<ref name="sunshine" />
A variety of different nuclear fusion reactions take place inside the cores of stars, depending upon their mass and composition, as part of [[stellar nucleosynthesis]]. The net mass of the fused atomic nuclei is smaller than the sum of the constituents. This lost mass is released as electromagnetic energy, according to the [[mass-energy equivalence]] relationship ''E''&nbsp;=&nbsp;''mc''<sup>2</sup>.<ref name="sunshine" />
 
The hydrogen fusion process is temperature-sensitive, so a moderate increase in the core temperature will result in a significant increase in the fusion rate. As a result the core temperature of main sequence stars only varies from 4 million kelvin for a small M-class star to 40 million kelvin for a massive O-class star.<ref name="aps_mss">{{cite web