nebulae

Some nebulae appear to be completely engulfed by exceedingly large molecular clouds.

有些气体星云似乎被极其巨大的分子云完全包围.

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Planetary nebulae are not as airy and tranquil as their images suggest.

行星状星云并不如影像中所显现的那麽飘逸宁静.

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Planetary nebulae are a type of isolated gaseous nebulae possessing a fair degree of bilateral symmetry.

行星状星云是一类孤立的气体星云,具有相当程度的双侧对称性.

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The Galactic Dust in Corona Australis: Two blue - reflection nebulae.

南冕座星尘内,两个星云焕发着梦幻般的蓝色光辉.

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These sources are generally viewed in projection against radio nebulae representing the remnants of supernova outbursts.

这类源一般都投影在超星爆发残骸的射电星云上.

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The element hydrogen comprises 90 % of the matter in gaseous nebulae.

元素氢占气体星云物质的百分之九十.

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Planetary nebulae fade away gradually over tens of thousands of years.

行星状星云在数万年间逐渐衰老.

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Some astronomers thought nebulae were part of our Milky Way Galaxy.

有些天文学家认为,星云是我们银河系的一部分.

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The spiral nebulae were scratches left by the grinder.

螺旋状的星云是研磨者所留下的痕迹.

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Such tumultuous, often visually spectacular, interstellar regions surrounding youthful stars are known as gaseous nebulae.

这种环绕着年轻星的动荡且常常是壮观的星际区域,叫做气体星云.

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Most of the universe is empty space. The rest is stars, planets , comets, and nebulae, right?

绝大多数的宇宙空间是真空状态, 除却星辰, 行星, 彗星和星云, 是这样 吗 ?

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Barnard's markings are dark nebulae, interstellar clouds of obscuring gas and dust.

巴纳德标记的是一黑暗星云, 模糊气体和尘埃组成的星际云.

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The nebulae, he said, were clouds of atoms and dust.

而星云, 他说, 是由原子和尘埃构成的云.

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You can see nebulae in the clear summer sky.

在晴朗的夏夜可以看到天上的星云.

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The spiral nebulae are impressive objects.

旋涡星云是迷人的天体.

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