People are wondering about if there are living creatures in other planets. Scientists have been searching for the answer all the time. Though the official never publishes any information about the existing of another life, most people believe that life exists in outer space. In the science fiction films, the directors try to search the space. They pictured the large galaxy and presented the audience how the aliens looked like. What's more, some documentaries also recorded the mysterious signs that seemed to be left by the unknown creatures. As a result, the public believes that aliens have come to our planet, or they just pretend to be someone else, studying about human beings. With the development of technology, someday the scientists can go much further and solve the riddles, at that time, we can know more about life. 人們一直想知道在其他行星是否有生物存在。科學家們一直在尋找答案。儘管官方沒有發佈任何關於其他生命存在的信息，但是大多數人都相信在外太空是有生命存在的。在科幻電影中，導演們試圖探索外太空，他們給觀衆刻畫了大型星系和外星人的樣子。而且，有些紀錄片還記錄了神祕的跡象，似乎是由未知生物留下的。因此，公衆相信外星人來過地球，或者他們只是假扮成人類，在研究人類。隨着科技的發展，總有一天科學家們能走得更遠，解開謎底，那時，我們可以對生命有更多的瞭解。
