In spite of all our advanced technology, the world is still at the very beginning of its voyage into space.
In the 1950s, China set out to explore space. In 2008, millions of people turned on the TV to witness Chinese first space walk. It was really a historic event, which had a great impact on space exploration. At the same time, China set out its lunar exploration program. Many programs are underway. In the last decade, China, our great motherland, has made a series of achievements. Chang'e2 satellite has sent back several pictures of the moon's surface. The surface of the moon is not similar to that of the earth, which is consistent with scientists' previous expectation.
Based on human beings' dream, a series of fiction novels and films appeared. Many of them are based on the assumption that the aliens from other planets will invade our earth. The aliens' invasion can make the earth destroyed. All of them are very scary and dramatic.
即便我们掌握了现在的全部先进技术，我们这个世界依然只是处于太空旅行的起步阶段。
20世纪50年代，中国开始探索太空。2008年数以百万计的人们打开电视见证了中国的首次太空漫步。这的确是一件历史性的事件，对太空探索产生了巨大的影响。同时，中国开始了月球探索项目。许多项目正在进行中。在近十年里，中国，我们伟大的祖国，已取得了一系列的成就。“嫦娥二号”卫星已经发回了月球表面的一些照片。月球的表面和地球的表面不相似，这跟科学家以前的预测是一致的。
基于人类的梦想，出现了一系列的科幻小说和电影。其中许多都是以假设来自其他星球上的外星人侵犯地球为主题，他们的侵略可以使地球毁灭。所有这些作品都很令人恐惧，同时又富有戏剧性。
