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nucleur fusion
A main sequence star burns hydrogen to helium. Once a main sequence star exhausts all of the hydrogen, it begins to expand and burn helium causing if to become a red giant.
A Main Sequence star.
Right now the sun is a main sequence star. When it uses up the hydrogen in its core it will become a red giant then shed its outer layers to become a white dwarf.
Main Sequence
nucleur fusion
Main-sequence.
A main sequence star burns hydrogen to helium. Once a main sequence star exhausts all of the hydrogen, it begins to expand and burn helium causing if to become a red giant.
A protostar generates energy by friction whereas a main sequence star generates energy by fusion.
A protostar generates energy by friction whereas a main sequence star generates energy by fusion.
Hydrogen
It will become a red giant.
The thing the "main sequence" stars have in common is that they get their energy from the fusion of hydrogen (hydrogen-1 is converted into helium-4).
A main sequence star gets its energy by fusing hydrogen-1 into helium-4.
Proton-Proton
Nuclear fusion starting with hydrogen.
A Main Sequence star.