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The main sequence of a red giant refers to the phase in a star's life cycle prior to its expansion into a red giant. During the main sequence, a star fuses hydrogen into helium in its core, generating energy that counteracts gravitational collapse. Once the hydrogen is depleted, the core contracts and heats up, leading to the outer layers expanding and cooling, which transforms the star into a red giant. Thus, the main sequence is characterized by stable hydrogen burning, while the red giant phase marks the transition to helium burning and further stellar evolution.

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4w ago

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Related Questions

Does a red main sequence star have fusion?

A red main sequence star would be a red dwarf or a branch red giant. To be on the main sequence, you have to have hydrogen nuclear fusion.


Is a red giant star considered to be a main sequence star?

No. Red giants are not on the main sequence.


What is the step after main sequence in a stars life?

After the main sequence, a star becomes a red giant.


What comes after the main sequence stage?

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How would you arrange this in order red giant white dwarf and main sequence?

The correct order of these stellar evolutionary stages is main sequence, red giant, white dwarf. A star begins its life on the main sequence where it fuses hydrogen into helium. As it runs out of fuel, it expands into a red giant before shedding its outer layers and collapsing into a white dwarf.


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Main sequence star: hydrogen-1. Red giants: helium-4.


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Red giant is the largest and the brightest.


Are red giants main sequence stars?

yes before it dies it becomes a red giant


What determines if a main sequence star will be a red giant or a super red giant?

It is the mass of the main sequence star. "High mass" stars can become supergiants (not always red). If you go into more details, you will find this answer is a simplification, but it's OK for most purposes.


Its Cooler larger and brighter than most main sequence stars?

red giant


When the Sun moves off the main sequence it will next become a?

It will become a red giant.


What category does a star belong in Main sequence star white dwarf red giant neutron star?

None of those is a main sequence star.