youdao

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。

youdao

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.

这个过程可能周而复始，周期性地重复--天文学家称之为"脉动"对不稳定性超新星--直至恒星失去足够的物质，在普通超新星的形态中走到生命的尽头。

youdao

When his series of 15 five-minute exposures is done, he has a truly startling image: a fragment of a supernova, a star that exploded 25, 000 years ago.

FORBES: A Star Is Born

When a star goes supernova, it leaves a remnant, like the one Tycho Brahe observed in 1572, or Johannes Kepler in 1604.

FORBES: When A Supernova ... Fizzles

The possibility of a supernova - an exploding star - was put forward, but then ruled out because the debris from such an event would still be visible in telescopes today.

BBC: Gamma-ray burst 'hit Earth in 8th Century'