Because the universe's oldest stars are only 10 billion to 20 billion years old there are no known black dwarfs-yet.

由于宇宙中最老的恒星也只有一百亿年至两百亿年的星龄，所以尚未有已知的黑矮星。暂时没有。

youdao

Instead, they should eventually just cool to become white dwarfs and then black dwarves.

相对的，它们最终只是会变冷成为白矮星和黑矮星。

youdao

White as snow, red as blood, and black as ebony; this time the dwarfs will not be able to awake thee.

像雪一样白，像血一样红，像乌木一样黑；这次矮人们没有办法弄醒你了。

youdao

These enormous emissions of energy occur when black holes, neutron stars or white dwarfs collide - the galactic mergers take just seconds, but they send out a vast wave of radiation.

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