Blue giant | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-10-04

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Blue_giant


00:00:50 Properties
00:03:24 Evolution



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SUMMARY
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In astronomy, a blue giant is a hot star with a luminosity class of III (giant) or II (bright giant).  In the standard Hertzsprung–Russell diagram, these stars lie above and to the right of the main sequence.
The term applies to a variety of stars in different phases of development, all evolved stars that have moved from the main sequence but have little else in common, so blue giant simply refers to stars in a particular region of the HR diagram rather than a specific type of star.  They are much rarer than red giants, because they only develop from more massive and less common stars, and because they have short lives in the blue giant stage.
The name blue giant is sometimes misapplied to other high-mass luminous stars, such as main-sequence stars, simply because they are large and hot.