spiral nebula
| Noun | 1. |  spiral nebula - a galaxy having a spiral structure; arms containing younger stars spiral out from old stars at the center |
| 单词 | spiral nebula | |||
| 释义 | spiral nebula
spiral nebulaspiral nebula:see galaxygalaxy,large aggregation of stars, gas, dust, and usually dark matter, typically containing billions of stars. Recognition that galaxies are independent star systems outside the Milky Way came from a study of the Andromeda Galaxy (1926–29) by Edwin P. ..... Click the link for more information. . spiral nebula
Synonyms for spiral nebula
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