蟹状星云距离我们，大概是5000光年。
The Crab Nebula is at a distance from us of about 5,000 light-years.
有一个物体叫做，蟹状星云脉冲星。
蟹状星云波霎每秒大约自转30次。
蟹状星云的大小约有10光年。
这是蟹状星云脉冲星的数据。
蟹状星云波霎每秒大约自转30次。
它的残余物组成了蟹状星云。
这是蟹状星云。
蟹状星云脉冲星的,质量和太阳不差太多。
The mass of the Crab Pulsar is not too different from that of the sun.
哈伯可见光下的蟹状星云。
我们已证明蟹状星云就是这次爆炸的遗迹。
We have identified the crab nebula as the debris of this explosion.
蟹状星云脉冲星变慢。
你知道吗，据说可以看到蟹状星云…哇，你看…
You know, they say that you can see the Crab Nebula. Wow, look…
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。
A stroboscopic picture, a stroboscopic exposure was made of the center portion of the Crab Nebula.
给你们看蟹状星云，我也要给你们看电磁，实验室里的漂亮飞轮。
I want to show you the Crab Nebula, and I think I will also show you the beautiful flywheels in the Magnet Lab.
这个绚丽的蓝色是金牛座星系中蟹状星云的脉冲风星云。
In brilliant blue, this is the pulsar wind nebula of the Crab nebula in the constellation of Taurus.
钱德拉最近做了个，蟹状星云的图，中子星的图，我现在给你们看。
And Chandra made a picture very recently of the Crab Nebula, of the pulsar, and that's what I want to show you now.
指出在蟹状星云介质中磁偶极辐射的穿透似乎是可能的。
It is shown that penetration of magnetic-dipole radiation in the medium of the crab nebula seems to be possible.
这个物体，这蟹状星云的脉冲星，辐射出丰富的x射线，以及伽马射线。
And this object, this pulsar in the Crab Nebula is radiating copious amounts of x-rays, of gamma rays.
蟹状星云脉冲星本身，散发的能量比太阳多，150000倍。
So the Crab Pulsar alone generates about 150,000 times more power than the sun.
例如，梅西耶天体m 1是蟹状星云，而M31是仙女座星系。
For example, Messier object M1 is the CRAB NEBULA and M31 is the ANDROMEDA GALAXY.
蟹状星云是，超行星在1054年，大爆炸后的产物，下节课中，我会详细讲它。
The Crab Nebula is the result of a supernova explosion that went off in the year 1054, and during my next lecture I will talk a lot more about that.
我昨天打电话问我，射电天文学的朋友，中子星在蟹状星云的，旋转周期是多少。
I called my radio astronomy friends yesterday and I asked them, "What is the rotation period of the neutron star in the Crab Nebula?"
蟹状星云脉冲星是脉冲星风星云中最为著名的一个，但它已经950岁了。
The Crab pulsar, the best-known example of a bright pulsar wind nebula, is about 950 years old.
它在网上有，我给你们看的是，大部分人没见过的，也就是蟹状星云的，中心部分，中子星在这里。
It's on the Web, and I show you a picture that many of you probably haven't seen yet, which is the center part of the Crab Nebula, and the pulsar is located here.
那么找到它们：超新星1987a的环，爱斯基摩星云，蟹状星云，雷神的头盔，车轮星系，蚂蚁星云。
OK, then find, the rings of Supernova 1987a, the Eskimo Nebula, the Crab Nebula, Thor's Helmut, the Carhwheel Galaxy, and the Ant Nebula.
在过去十年间，钱德拉X射线天文台经常协同其他天文望远镜对“蟹状星云”进行联合观测。
In the past decade, the Chandra X-ray Observatory, often in conjunction with other astronomical telescopes on the "Crab Nebula" in joint observation.
而现在，突如其来的蟹状星云辐射波动现象必将影响任何一个将其作为标准或校准工具的研究项目。
An unexpectedly varying Crab Nebula might have affected any research that used the Crab as a standard or a calibration tool.
最有名的波霎，或许要算是蟹状星云里头的那颗了，这片星云是1054年观测到的超新星爆炸的残骸。
Perhaps the most famous pulsar lies within the Crab Nebula, the remnant of a supernova explosion that was observed in 1054.
最有名的波霎，或许要算是蟹状星云里头的那颗了，这片星云是1054年观测到的超新星爆炸的残骸。
Perhaps the most famous pulsar lies within the Crab Nebula, the remnant of a supernova explosion that was observed in 1054.
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