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  • What Is Nuclear Fusion? The Power Source of the Stars
    In the cores of stars, immense gravitational pressure forces hydrogen nuclei—protons—so close together that they overcome their natural repulsion (since like charges repel) Once they are close enough, the strong nuclear force binds them together into a new nucleus
  • astrophysics - How does gravity cause nuclear fusion in stars . . .
    But in fact what happens is that it starts off with quite a low pressure, so gravity wins, and starts making it smaller What this means is that all the hydrogen atoms start moving down the gravitational potential gradient: they are losing gravitational potential energy
  • Why does gravity increase in star formation? - Astronomy . . .
    Over its life, the outward pressure of fusion has balanced against the inward pressure of gravity Once the fusion stops, gravity takes the lead and compresses the star smaller and tighter Temperatures increase with the contraction, eventually reaching levels where helium is able to fuse into carbon
  • About Nuclear Fusion In Stars - Sciencing
    As gravity collapses the cloud, it breaks up into smaller pieces, each centered around a concentration of matter As these concentrations increase in mass, the corresponding gravitation and thereby the entire process accelerates, with the collapse itself creating heat energy
  • Stellar nucleosynthesis - Wikipedia
    In astrophysics, stellar nucleosynthesis is the creation of chemical elements by nuclear fusion reactions within stars Stellar nucleosynthesis has occurred since the original creation of hydrogen, helium and lithium during the Big Bang As a predictive theory, it yields accurate estimates of the observed abundances of the elements
  • Stellar Nucleosynthesis: How Stars Make the Elements - ThoughtCo
    Stellar nucleosynthesis is how stars turn lighter elements into heavier ones through fusion Early stars formed when hydrogen and helium were pulled together by gravity to start fusion Heavier elements like carbon and oxygen form as helium fuses with other elements in stars
  • Nuclear Fusion in Stars - AQA GCSE Physics Revision Notes
    Learn about the process of nuclear fusion in stars for your GCSE physics exam This revision note covers how fusion occurs, and the formation of new elements


















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