人一生中至多只能见到一次的哈雷彗星,正以每秒十一里的速度向地球飞驰而来。今年十一月上旬,用小型望远镜便可寻觅到它拖着漂亮长尾的身影,从十二月下旬开始,人们凭肉眼也可看到它了。 这颗以“哈雷”命名的彗星,是一六八二年由英国天文学家艾德蒙·哈雷偶然发现的。他对比一 The comet Halley, who can only see once in his life, is flying toward the Earth at eleven miles per second. In early November of this year, a small long-eyed telescope can be used to find the long, long tail dragged by it. From late December, people can see it with the naked eye. This comet named after “Halley” was accidentally discovered in 1882 by the British astronomer Edmund Harley. He contrasts one