translation.en: And, if even all of the planetary systems in our galaxy were devoid of life, there are still 100 billion other galaxies out there, altogether 10^22 stars.
translation.zh: 即使所有的行星系在我们的星系中都不存在生命， 另外还有1000多亿个星系， 总共有10的22次方颗恒星。