Physicist Sean Carroll has become a bit of a rock star in geek circles by attempting to answer an age-old question no scientist has been able to fully explain: What is time?

物理学家肖恩·卡罗尔(Sean Carroll)就是其中之一。他因为尝试去回答一个目前还没有科学家能够真正解释的古老问题，已经有了一点极客圈摇滚明星的感觉；这个问题就是：时间是什么？