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Extragalactic Nebula

n. (astronomy) a collection of star systems; any of the billions of systems each having many stars and nebulae and dust

同义词： galaxy

1、[天]河外星云

... 寒武纪生命大爆发 the Cambrian explosion 河外星云 extragalactic nebula 恒星 star ...

2、河外星云

...dark nebula 暗星云extragalactic nebula 河外星云network nebula 网状星云 ...

elliptical extragalactic nebula[天] 椭圆河外星云

天文学

n.(astronomy) a collection of star systems; any of the billions of systems each having many stars and nebulae and dust

同义词：galaxy

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