1. The telescope captured a clear image of an extragalactic nebula.
望远镜拍摄到了一张银河系外星云的清晰照片。

2. Scientists study extragalactic nebulae to understand galaxy formation.
科学家研究银河系外星云以了解星系形成。

3. Observing an extragalactic nebula requires very powerful telescopes.
观察银河系外星云需要非常强大的望远镜。

A: Have you seen the extragalactic nebula in the new telescope images?
A：你看到新望远镜拍摄的银河系外星云了吗？

B: Yes, it looks magnificent and full of bright stars.
B：看到了，壮观极了，星星非常明亮。

1) 位于银河系以外的星云

2) 通常为其他星系的一部分

3) 天文学研究的重要对象

1. 银河系之外的星云或星系体

e.g. The extragalactic nebula is visible only with powerful telescopes.
银河系外星云只能用强大的望远镜看到。

2. 天文学中研究星系形成和结构的对象

e.g. Astronomers analyze light from extragalactic nebulae to study star formation.
天文学家分析银河系外星云的光以研究恒星形成。

noun

1. A nebula that exists outside the Milky Way galaxy, often part of another galaxy.

2. A target of astronomical study to understand the formation and structure of galaxies.

Synonym: intergalactic nebula, external galaxy nebula