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a string of gleaming pearls 一串闪亮的珍珠

supernova 超级新星


__________________________________________________________And so violent, it triggered a string of nuclear reactions forcing atoms together, creating new elements: gold, silver, platinum, blasting them out into space.


Look at this! It's like a string of gleaming pearls. It's a fireball expanding out from what must have been a massive explosion. A supernova, so bright that when light from the explosion reached Earth 20 years ago, it was visible to the naked eye.
看！很像一串闪亮的珍珠。一个火球在强烈爆炸后向外扩张，一颗超新星。爆炸产生的光亮非常亮，20年前抵达地球那时用肉眼就可以看到。