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。
A pulsar is not a normal star, but a dense, rapidly spinning remnant of a supernova explosion.
脉冲星并不是一种正常的恒星，它是超新星爆炸后留下的高密度快速旋转的残余部分。
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.
它是超行星在1054年，爆炸后的剩余物4，下节课我会，详细讲它，这里你看到的不是，脉冲星那时，聚集的物质。
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