一直在减肥 宇宙不仅伸展的空间十分遥远,而且 绵延的时间极其久长。那么,太阳的年龄 有多大,它将来还能活多久? 1785年,苏格兰地质学家赫顿第一 次尝试从科学上回答这类问题。他在《地 球理论》一书中估算了地球表面缓慢变 化--山脉的形成,河岸的冲蚀,等等 的速率,断定这类变化已经延续了千百 万年。 We have been losing weight. The universe is not only stretched far away, but it’s been a long time. So how old is the Sun and how long will it last? In 1785, Scottish geologist Hutton first attempted to scientifically answer such questions. In his book, Earth Theory, he estimated the rate at which the Earth’s surface slowly changed—the formation of mountains, the erosion of river banks, and so on, and concluded that such changes have lasted for thousands of years.