Red Giant Star (Noun)
Meaning
A large, old, luminous star; has a relatively low surface temperature and a diameter large relative to the sun.
Classification
Nouns denoting natural objects (not man-made).
Examples
- Our galaxy contains many red giant stars that are nearing the end of their life cycles and will soon explode as supernovae.
- The Hertzsprung-Russell diagram can be used to identify and classify red giant stars in a given celestial population.
- When our sun exhausts its hydrogen fuel, it is expected to expand around 100 times its current size and become a red giant star.
- Betelgeuse, a famous red giant star in the constellation Orion, has been observed to fluctuate in brightness and may be close to supernova explosion.
- Some red giant stars undergo a brief helium flash phase, where helium fusion dominates their energy production for a short period.