translation.en: We don't know the answer to that either, but we will learn that answer this year, thanks to NASA's Kepler Space Telescope, and in fact, the smart money, which is to say the people who work on this project, the smart money is suggesting that the fraction of planets that might be suitable for life is maybe one in a thousand, one in a hundred, something like that.
translation.zh: 我们也不知道这个问题的答案 但是我们今年将会有答案 这多亏美国航空航天局的开普勒太空望远镜 而事实上，精英们，也就是那些为这个项目工作的人们 他们认为可能有生命存在的星球比例 可能是千分之一 或百分之一之类