For the first time ever, a black hole has been seen being born out of a supernova of a star perhaps 20 times the mass of our sun.
有史以来,人类第一次观察到了一个黑洞的诞生,它生成自一颗约是太阳质量20倍恒星的超新星爆炸中。
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The cycle can repeat itself in pulses—astronomers call this case a “pulsational” pair-instability supernova—until the star loses enough mass to end its life in an ordinary supernova.