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Q: How much hydrogen does a red giant phase have?
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Which type of fusion occurs in the red giant phase?

Thermonuclear fusion of hydrogen occurs during the red giant phase. Helium to carbon fusion, or dredge up, also occurs at this time.


When does the dying phase of a massive star begin?

The dying phase of a massive star begins when it runs out of usable hydrogen that it can convert to helium. Once it becomes a red giant, it slowly dies out.


What is a star called that has exhausted its supply of hydrogen?

A star that has exhausted the hydrogen in its core will become a red giant or supergiant.


The sun will eventually use up its hydrogen fuel and become what?

When the sun exhausts the hydrogen in its core and become a red giant.


What causes a red giant?

After a star burns up all it's hydrogen, it becomes a red giant.


Where does the energy for the fusion in the red giant come from?

A red giant is a star that has (to a great extent, at least) run out of hydrogen; it will therefore fuse hydrogen into heavier elements.


What is an expanding star after exhausting its hydrogen fuel called?

A Red Giant or a Red Super Giant if it is very large.


What will happen to Jupiter and the other gas Giants when the Sun becomes a Red Giant?

Nothing much. Their orbits are outside of the radius of the sun while in the gas giant phase.


When a red giant loses its outer layer and the core shrinks to one millionth of its original size what type of star is formed?

When aÊstar completes it's Red Giant phase they become White Dwarfs. The Red Giant phase of stars takes about a billion years.


What causes a giant?

After a star burns up all it's hydrogen, it becomes a red giant.


The star begins to run out of fuel and expands Into a red giant or red super giant?

No. That is when stars run out of hydrogen. They then have helium for fuel.


Will the sun engulf mars when it becomes a red giant?

It probably wont hit Mars at the Red Giant phase but Mars will get VERY hot.