translation.en: And therefore, it's through listening that we've come to uncover some of the universe's most important secrets -- its scale, what it's made of and even how old it is.
translation.zh: 因此，通过倾听 我们揭开了 一些宇宙中最终要的秘密 -- 它的规模，它由什么组成 甚至是它的年龄。