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状星云

状星云

状星云

状星云

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The mass of the Crab Pulsar is not too different from that of the sun .

蟹状星云脉冲星的，质量和太阳不差太多。

2

Pictured above is one of several striking dust pillars of the Eagle Nebula that might be described as a gigantic alien fairy .

上图为鹰状星云若干突出的尘埃柱之一，就像是一个巨大的外星精灵。

3

It is one of the best examples of a planetary nebula and a favorite target of amateur astronomers.

它是行星状星云的最好范例之一，也是业余天文爱好者最喜欢观测的目标之一。

6

This Hubble Space Telescope image reveals "The Cat's Eye Nebula " to be one of the most complex "planetary nebulae" known.

哈勃望远镜拍到的这张 “猫眼状星云 ”是当前所知最复杂的 “行星星云 ”之一。

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As if to don a crown of heavenly jewels , the Cone Nebula rises 7 light-years into the Monoceros constellation.

麒麟座内升起的锥状星云，高度达到 7 光年，外形好似一个镶满宝石的王冠。

8

You know , they say that you can see the Crab Nebula . Wow , look. . .

你知道吗，据说可以看到蟹状星云 …哇，你看。

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This image from the Hubble Space Telescope reveals the Cat&squots Eye Nebula to be one of the most complex planetary nebulae known.

这张来自哈伯太空望远镜的影像，透露出猫眼星云是现知结构最复杂的行星状星云之一。

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The Crab Nebula , one of the most -studied celestial objects , is the remnant of a supernova that was observed by Chinese astronomers in 1054 .

蟹状星云 ——超新星爆发后的遗迹，是人类最常研究的天体之一，由中国天文学家于 1054年首次观测到。

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A stroboscopic picture , a stroboscopic exposure was made of the center portion of the Crab Nebula .

一张频闪观测仪的图，对蟹状星云的中心，进行频闪观测曝光。

13

The Crab Nebula , the result of a supernova seen in 1054 AD, is filled with mysterious filaments .

蟹状星云是西元 1054年超新星的遗骸，它的内部到处都是神秘难解的丝状物。

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Hence , it is rare that an open cluster survives long enough for one of its members to form a planetary nebula .

因此，一个疏散星团很少能够存活到它内部的某个成员变成行星状星云。

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Astrophysicists have long thought of the Crab Nebula as a steady "standard candle " in X-ray wavelengths .

天体物理学家们长久以来一直将蟹状星云的 X 射线波段视作稳定的 “标准烛光 ”。

16

Our own sun will blossom into a planetary nebula when it dies in about five billion years.

大约 50亿年后，我们的太阳死去时，也会变成行星状星云。

17

These planetary nebulae hint at the fate of our own Sun as its core runs out of nuclear fuel in another 5 billion years.

行星状星云同时也是我们太阳五十亿年后，耗尽核燃料后的宿命。

18

The spectacular planetary nebula Helix Nebula is the death of a star disguised as a butterfly .

色彩斑斓的行星状星云螺旋星云，正是恒星死亡所化身的蝴蝶。

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The result is called , somewhat misleadingly, a planetary nebula .

这个结果称为行星状星云，这是个常让人误解的名字。

21

The central planetary nebula nucleus (PNN) or white dwarf central star is the fainter of these two stars .

行星状星云核心的中心可能是一颗比这两颗恒星更暗淡的白矮星。

22

Also known as Abell 21 , this Medusa is an old planetary nebula some 1 , 500 light-years away in the constellation Gemini.

也被称作阿贝尔 21 ，水母星云是双子座中一个 1500 光年远的年老行星状星云。

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Combined data from four X-ray satellites shows fluctuations in the Crab Nebula 's X-ray output over the last 12 years .

过去 12 年中四个不同 X 射线卫星探测器探测到的蟹状星云 X 射线输出的变化情况。

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Both are planetary nebulae , gaseous shrouds cast off by dying sunlike stars , and are similar in physical size , at a light-year or so across.

都是行星状星云，气体外壳都是由濒临死亡的恒星吹出，在物理大小上类似，涵盖大约一光年左右。

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and planetary nebulae, in which a dying star has thrown off its outer layers, with the exposed hot core then ionizing them.

而行星状星云是垂死的恒星抛出来的外壳被曝露的高热核心加热而被游离的。

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Many objections can be raised to this picture of planetary nebula formation .

形成行星状星云的这一图像可能会引起许多异议。

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Planetary nebulae have long been appreciated as a final phase in the life of a sun -like star .

行星状星云长期被视为类太阳恒星生命的最后阶段。

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