The size of the nebula at this stage is inversely proportional to its mass.
这个阶段的星云大小与其质量成反比。
As the nebula collapsed caused by its gravity, it spun faster and flattened into a disk.
当星云因其重力而坍缩时，它旋转得更快，并压扁成一个盘状。
During his sophomore year, he sold his first science-fiction story to a Scottish magazine named Nebula.
在他大二的时候，他把自己的第一个科幻故事卖给了一家名为《星云》的苏格兰杂志。
The Dumbbell Nebula, also known as Messier 27, pumps out infrared light in this image from NASA's Spitzer Space Telescope.
哑铃星云，也称梅西耶27，在美国宇航局斯必泽空间望远镜拍摄的这张图片中，发出红外光。
The same minerals that occur in refractory inclusions are believed to be the earliest-formed substances to have condensed out of the solar nebula.
难熔的内含物中的那种矿物质，也被认为是最早形成的太阳星云凝结的物质。
It seems very unlikely that large portions of the nebula were heated to such extreme temperatures, and huge nebula areas could not possibly have lost heat so fast.
星云的大部分都被加热到如此极端的温度似乎是不太可能的，而巨大的星云区域不可能这么快就失去热量。
And here you see the Crab Nebula.
这是蟹状星云。
The vast Cat's Paw Nebula in Scorpius.
天蝎座里巨大的猫爪星云。
See photos of new planetary nebula.
查看新的关于行星云团的照片。
我们创造了一座星云！
这是一座星云！
The Eskimo nebula is clearly a planetary nebula.
爱斯基摩星云显然是一个行星星云。
How was the unusual Red Rectangle nebula created?
这个不寻常的红色矩形星云是怎么形成的？
Near the image bottom lies IC 4592, the Blue Horsehead nebula.
在照片底端附近是有蓝色马头星云之称的IC 4592。
L the Horsehead nebula in Orion is the best-known dark nebula.
l猎户星座中的马头星云是最著名的暗星云。
Emission nebula Sharpless 249 fills the field at the upper left.
发射星云沙普利斯249弥漫在图像的左上部。
To the right is a star-forming nebula of dust and gas, called S175.
在图片的右边是正在孕育着恒星的星云尘埃和气体，我们叫它S175。
The star cluster is embedded in a nebula, which spans some 110 light-years.
该星团嵌在一个约110光年大的星云内。
To the right is the Soul nebula, also known as the Embryo nebula, or IC 1848.
星云的右边是灵星云，也叫做胚胎星云，指定图像代码为IC 1848。
L the Great nebula of Orion is a glowing nebula just visible to the naked eye.
l猎户座星云是只用肉眼就可以看见的星云。
The Hubble Space Telescope provided an image of a stellar jet in the Carina Nebula.
哈勃空间望远镜提供了一幅船底座星云恒星喷流的图像。
The nebula was named after its resemblance to a dumbbell when seen in visible light.
该星云因在可见光下观测其形似哑铃而由此得名。
Radiation from hot, young stars has slowly eroded the nebula over millions of years.
数百万年来炎热的年轻恒星发出的辐射不断的侵蚀着这个星云。
Like its mythological namesake, the nebula is associated with a dramatic transformation.
如它的希腊神话同名者，星云与一戏剧性的变化相关。
Like its mythological namesake, the nebula is associated with a dramatic transformation.
如它的希腊神话同名者，星云与一戏剧性的变化相关。
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