1. The Hubble telescope was launched into space by NASA on April 20, 1990 at a cost of over a billion dollars.
    哈勃望远镜于1990年4月20日由国家航空航天局发射升空，耗资10多亿美元。

2. NASA is now going to put the telescope right, so it will soon be sending up four astronauts to repair it.
    国家航天局准备纠正这一错误，为此将把4名宇航员送入太空修复望远镜。

3. As Daniel Goldin of NASA observed, ´Finding life elsewhere would change everything.
    正如美国国家航空和宇宙航空局的丹尼尔.戈尔丁指出的"在其他地方发现生命会改变一切。