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Stars cannot fuse any other elements heavier than iron simply for the fact that it does not produce energy. However, what comes next mainly depends on how much mass is contained within the star itself. If the mass of the star is 1.4 times the size of our sun, the electron degeneracy pressure (what holds up the dying star. the lower limit to size--electrons in star are squeezed together so tightly, further contraction is impossible) cannot hold the star, so the electrons are "squeezed" together, creating neutrons. The star will shrink until neutrons are packed as close together as possible and a neutron is the result. Neutron stars do not glow like white dwarfs but can be detected.
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How does nuclear fusion affect stellar evolution?
Nuclear fusion affects stellar evolution by essentially halting all mitosis and miosis that any cells in a stellar evolution could experience, and they stunt the growth of the object.
What is the name of the stellar process in which the fusion of hydrogen produces other elements?
The stellar process in which the fusion of hydrogen produces other elements is called nucleosynthesis. This is a key process in the evolution of stars, where lighter elements such as hydrogen and helium are fused together to form heavier elements like carbon, oxygen, and iron.
What stage of stellar evolution marks the end of helium fusion?
In G-type stars, this would be the white dwarf stage. More massive stars could continue to fuse ever heavier elements, until the fusion products consist mainly of iron, and the stellar core collapses into a neutron star or a black hole.
As heavier elements are formed by fusion a massive star expands into?
As heavier elements are formed by fusion in the core, a massive star will eventually exhaust its nuclear fuel and trigger a supernova explosion. This explosion will generate immense energy, leading to the production and dispersal of even more heavy elements into space.
What chemical elements are formed inside stars?
Hydrogen and helium are primarily formed inside stars through nuclear fusion processes. As stars age and go through various stages of stellar evolution, they can also produce heavier elements such as carbon, oxygen, and iron through fusion reactions in their cores.
What are ninety percent of stars made up of?
Ninety percent of stars are primarily composed of hydrogen, with helium making up most of the remaining composition. These two elements are the building blocks of stellar formation and nuclear fusion processes that power stars. Heavier elements, such as carbon, oxygen, and nitrogen, make up a much smaller fraction of a star's composition, typically formed later in stellar evolution through fusion processes.
How do stars create all elements up to iron in their core. What if your answer?
The process is called stellar nucleosynthesis and is based on nuclear fusion reactions.
What space process can lead to the formation larger elements?
Nuclear fusion in stellar cores, such as in stars like our sun, can lead to the formation of larger elements through the fusion of lighter elements. Supernova explosions can also create conditions necessary for the synthesis of heavy elements.
Why is iron special in stellar evolution?
Energy is liberated through fusion reactions, producing heavier and heavier elements. There are two transient elements heavier than iron which are produced by standard stellar nucleosynthesis, but these are short lived and decay into lighter elements. Iron is the heaviest element forged in the heart of a star via standard stellar evolution. All elements heavier than iron are the byproduct of a supernova, wherein atomic nuclei are smashed together with such force energy is consumed in the nuclear reaction. This is why there tends to be an abundance of stable isotopes as light as iron, but elements heavier than iron are much more rare. Lead is an exception to this general rule as it is the end product of a long radioisotope decay sequence.
What is the cause of Stellar Evolution?
Nuclear physics. As a star ages, the fusion of lighter elements into heavier elements changes the composition of the star's core, which in turn affects the dynamics of its interior. Convection patterns change, the core's energy production changes, and so on. This ultimately affects the way a star looks in our telescopes.
Where did Fred Hoyle believe elements were created?
Fred Hoyle believed that elements were created in the cores of stars through nuclear fusion processes. He coined the term "stellar nucleosynthesis" to describe how heavier elements are formed from the fusion of lighter elements in the intense heat and pressure within stars.
All elements except have been cooked for billions of years in stars?
All elements except for hydrogen and some helium were formed in the cores of stars through nuclear fusion over billions of years. This includes heavier elements like carbon, oxygen, nitrogen, and iron, which were synthesized in the later stages of stellar evolution or in supernova explosions. These elements were then released into space through stellar processes, eventually forming new stars, planets, and ultimately life.
