Meaning Of The Word Planetary nebula
What's the definition of Planetary nebula? Find Planetary nebula meanings, definitions and more at the Real Dictionary online.
Planetary nebula Meaning
| Planetary nebula Definition |
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What's The Definition Of Planetary nebula?
planetary nebula in American English
a glowing, expanding nebula that forms around a collapsing star noun: an expanding shell of thin ionized gas that is ejected from and surrounds a hot, dying star of about the same mass as the sun; the gas absorbs ultraviolet radiation from the central star and reemits it as visible light by the process of fluorescence planetary nebula in British English noun: an expanding shell of gas surrounding a dying star, formed from matter ejected from the star's outer layers; the gas is ionized by the remaining hot stellar core, emitting light in the process |
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