超新星爆发

• These hubble space telescope images pinpoint distant supernova , which exploded and died billions of years ago
  哈勃大空望远镜拍摄了遥远的超新星爆发，这些恒星是在数十亿年前爆发及死亡。
• Testing this theory has been difficult , however , because no supernova has gone off in our galaxy since 1680
  但是，要验证这项理论却非常困难，因为自1680年起银河系内就不曾发生超新星爆发事件。
• The crab nebula is the remnant of a star s supernova explosion which was recorded in 1054 by chinese astronomers
  中国古代的天文学家在1054年记录了一次超新星爆发，爆炸的残骸便是现在的蟹状星云。
• Theory predicts that a star with a mass between eight and 25 times that of our sun ends its life in a supernova explosion
  当一颗恒星的质量介于太阳质量的8 ~ 25倍时，理论预测它将会以超新星爆发的形式结束生命。
• Therefore soon after their supernova birth , their rotational speed will become so low that they stop to emit electromagnetic pulses
  因此，超新星爆发后不久，磁星的自转速度会变得非常缓慢，因而停止发放电磁脉冲。
• The most recent supernova visible by naked eyes was the sn1987a , which is located in a small nearby galaxy , the large magellanic cloud
  近年来可以用肉眼看到的超新星爆发，发生在一个称为大麦哲伦云的小星系内的sn1987a 。
• In fact , the cosmic crab is now known to be a supernova remnant , an expanding cloud of debris from the death explosion of a massive star
  实际上,现在我们知道蟹状星云是超新星爆发的遗迹,即一个巨大恒星死亡后爆炸的残屑云。
• Supernova explosion is extremely violent . the brightness of the star will increase by up to 15 magnitudes . this will be a spectacular astronomical event
  超新星爆发十分激烈，恒星的亮度可以暴增15等，是宇宙中最璀璨的天文现象。
• The remnant of that supernova , which contains the material ejected from the exploded star , becomes the crab nebula , or m1 . m1 is visible through a small telescope
  当年超新星爆发出来的残迹还形成了现今用小型望远镜都可以看得见的m1蟹状星云。
• On february 23 , 1987 , astronomers got the next best thing : a supernova in one of the milky way ' s satellite galaxies , the large magellanic cloud
  在1987年2月23日，天文学家获得了次佳的机会：银河系的卫星星系大麦哲伦云中，发生了一次超新星爆发。