Helium
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When hydrogen nuclei fuse together, they can form helium. This fusion process is the energy source for stars, including our sun, where hydrogen nuclei combine to form helium through a series of nuclear reactions.
When the nuclei of hydrogen and lithium are fused together, helium is produced.
Hydrogen was formed in the early universe through a process called Big Bang nucleosynthesis, where protons and neutrons combined to form hydrogen nuclei. It is the most abundant element in the universe, created during the first few minutes after the Big Bang.
Helium is an element that is formed through nuclear fusion in the cores of stars. It is the second most abundant element in the universe after hydrogen and is produced when hydrogen nuclei fuse together under extreme heat and pressure.
Hydrogen was formed in the early universe, around 3 minutes after the Big Bang during a phase known as Big Bang nucleosynthesis. At that time, the extremely high temperatures and pressures allowed for the fusion of protons and neutrons to form hydrogen nuclei.
The Sun burns hydrogen for fuel through nuclear fusion in its core. Four hydrogen nuclei combine to form one helium nucleus, releasing a large amount of energy in the process.