Definition of supergiant in English:
A very large star that is even brighter than a giant, often despite being relatively cool.
- It was suggested that the red supergiant orbited a companion star that had shredded its outer layers just before the explosion.
- This new heat supply causes the outer layers of the star to expand and cool, and the star becomes a red giant, or a red supergiant if it is very massive.
- In fact, it has become the coolest supergiant star ever found and all because of a single observation made by a dedicated amateur astronomer in Australia.
Definition of supergiant in:
- British & World English dictionary
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