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giant star
A star whose surface layers have expanded and cooled following the exhaustion of its core hydrogen reserves. In this post main sequence state the star has a diameter of 5 to 25 times that of the Sun and a luminosity of a few tens to a few hundreds of times that of the Sun. Nearby giants include Aldebaran, Arcturus, and Capella.
Related entries
Related category
• TYPES OF STARS
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