WebApr 26, 2024 · When a star gains mass, the pressure inside it also increases, which pushes the hydrogen atoms together with more and more force. At one point, when the star has … WebQuestion Date: 1999-06-03. Answer 1: Stars are formed from large clouds of gas. The gas, which might be the wisps of older stars which have exploded, or simply left from the Big Bang, is very cold and the cloud begins large but not at all dense. Gravity, which causes all the atoms of the gas to pull each other together, makes the cloud contract.
astrophysics - How does gravity cause nuclear fusion in stars ...
WebApr 12, 2024 · When their fuel for nuclear fusion is exhausted the outward pressure that supports massive stars against the inward force of gravity also halts. This causes a complete gravitational collapse that ... WebNuclear fusion is a reaction in which two or more atomic nuclei are combined to form one or more different atomic nuclei and subatomic particles (neutrons or protons).The difference in mass between the … mfg northgate
Stellar Nucleosynthesis: How Stars Make All of the Elements
WebThe evolution of stars can be viewed as a passage through various stages as thermonuclear reactions and nucleosynthesis cause compositional changes over long time spans. Hydrogen (H) “burning” initiates the fusion energy source of stars and leads to … WebJul 4, 2024 · The star has grown enough in size and density for the central region to initiate a nuclear reaction, which causes the star to shine, like the Sun. At this point, the star is called a T-tauri star, and this is the first time that the star can be observed visually. ... the star will burn nuclear fuel in its center and emit energy as the radiation ... WebDec 24, 2014 · By emitting an electrically charged W boson, the weak force changes the flavor of a quark, which causes a proton to change into a neutron, or vice versa. This is what triggers nuclear fusion and ... mfg northwick