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red giant star

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red giant star [′red ¦ji·ənt ′stär]
(astronomy)
A star whose evolution has progressed to the point where hydrogen core burning has been completed, the helium core has become denser and hotter than originally, and the envelope has expanded to perhaps 100 times its initial size.


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Mars' ruddy color makes it a close match to the red giant stars Aldebaran and Betelgeuse.
But the one date that almost every scientist will agree on is the moment when the sun goes supernova, turns into a red giant star and swallows most of the solar system, including Earth.
But the one date that almost every scientist will agree on is the moment when the sun goes supernova, turns into a red giant star and swallows most of the solar system, including Earth.
 
 
 
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