planetary nebula
n.
A nebula, often circular or ring shaped, formed by the ejection of the outer layers from a late-stage, low-mass star.
planetary nebulathe Cat's Eye nebula
NGC 6543
| 单词 | planetary nebula |
| 释义 | planetary nebula n. A nebula, often circular or ring shaped, formed by the ejection of the outer layers from a late-stage, low-mass star. planetary nebulathe Cat's Eye nebula NGC 6543 |
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