第一次从电视上看到飞船发射、交会对接、返回地球的画面,我的小脑袋里突然蹦出好多问题。为了满足我的好奇心,妈妈带我去看太空展览,还给我买了好多关于太空知识的书。通过读书我知道,太阳系里有恒星太阳,还有水星、金星、地球、火星、木星、土星、天王星和海王星八大行星,它们一边自转,一边绕着太阳不停地公转,可有意思了。我们都住在地球上。可是为什么只有地球上有生命呢?为了搞清这 The first time I saw the launch of the spacecraft on the television, rendezvous and docking, the picture of returning to Earth, my head suddenly jumped out a lot of problems. In order to satisfy my curiosity, my mom took me to the space exhibition and bought me a lot of books on space knowledge. I know through reading that there are stars in the solar system, as well as Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune, all of which are interesting when they revolve and revolve around the sun. We all live on earth. But why only there is life on earth? In order to find out this