17. The youngest known neutron star in the Milky Way, Cas a was born in a supernovaexplosion that astronomers may have spotted 330 years ago.
作为银河系中已知的最年轻的中子星，Cas a诞生于330年前天文学家可能观测到的一次超新星爆发中。
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18. 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.
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。
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19. Indeed, Cheng expects that the energy of the shock front at the galactic centre is nearly 100 times greater than that created by a supernovaexplosion.
确实，Cheng预计银河中心激震前沿的能量将近是超新星爆发产生的能量的一百倍。
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20. The white source near the center of the image is a dense, rapidly rotating neutron star, or pulsar, all that remains of a core-collapse supernovaexplosion.
21. Burning fuel at a prodigious rate and near the end of its stellar life this star should ultimately go out with a bang in a spectacular supernovaexplosion.
这种大质量恒星会以极高的速度燃烧燃料，现正处于恒星演化的末期，终将超新星爆炸结束它的生命之旅。
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22. Scattered debris from supernova explosion N49 lights up the sky in this gorgeous composited image based on data from the Chandra and Hubble Space Telescopes.
这张华丽的合成图像中，超新爆发的散乱碎片N49照亮了星空，数据基于钱德拉和哈勃太空望远镜。
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23. The explosion, the supernovaexplosion throws the outer layers of the star with a huge speed some 10,000 kilometers per second into space, and that is what you are seeing.
24. Planets going round pulsars are unlikely to have life, because any living beings would have been killed, in the supernovaexplosion that led to the star becoming a pulsar.
25. That birth date is in April 1979, when the supernovaexplosion that signaled the collapse of the star was spotted flaring brightly in the M-100 galaxy by a school teacher using a telescope.
26. It is the remnant of a supernova explosion in the year 1054 much more about that during my next lecture and what you see here is not stuff that is generated at this moment in time by the pulsar.
27. The nebula is a large supernova remnant, an expanding cloud born of the death explosion of a massive star.
该星云是超新星的遗迹，是一个大质量的恒星死亡爆炸时的扩散云气形成的。
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28. For decades astronomers have suspected the existence of a type of stellar explosion that is bigger still-a "pair-instability" supernova, with 100 times more energy than an ordinary supernova.
29. Using the new Chandra data, the age of N49 is thought to be about 5,000 years and the energy of the explosion is estimated to be about twice that of an average supernova.
30. Using the new Chandra data, the age of N49 is thought to be about 5,000 years and the energy of the explosion is estimated to be about twice that of an average supernova.
