科学家告诉我们,光速是极限。这就是说,不论宇宙怎样努力,它在自我内部建立联系的速度都将有一个上限——每秒三十万公里的样子。比如说,距离太阳系最近的恒星半人马座α星,如果想与我们进行一个回合的通话,最少也需要八百多年的时间。对宇宙这种尺度的事物而言,这似乎是一件让人沮丧的事。但此事也有积极的一面,就像19世纪神秘主义科幻小说的代表人物同时也是天文学家的弗拉马里翁曾经思考过的那样,就在我写作此文的时候,距离我 Scientists tell us that the speed of light is the limit. This means that no matter how hard the universe works, it will have an upper bound on how fast it can connect with itself - 300,000 kilometers per second. For example, star Alpha Centauri, the star closest to the solar system, will take at least 800 years to make a round-robin call with us. This seems a depressing thing for this scale of the universe. But it also has a positive side. Just as the representative of mystic science fiction in the 19th century also thought of by astronomer Flamaron, just as I was writing this article,