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茫茫的宇宙空间到底存在不存在“外星人”？对于这个问题，我的回答是肯定的。 Is there any "alien" in the vast space? My answer to this question is yes. 因为从生命的起源来看，只要在合适的恒星系统中的一颗条件温和的行星上，产生一定的化学反应即可产生原始的生命。据科学研究推测，这种现象不只是地球上的特有，在整个宇宙空间中绝对会有不少这样的现象。着名天文学家弗兰克·德瑞克早在1961年就提出了一个推断外星生命的方程式，我们通常叫它为“德瑞克方程式”。“德瑞克方程式”现在已经得到全世界很多天文学家的认可。通过“德瑞克方程式”的计算，天文学家们乐观地推断出，仅在银河系中就存在着大量的可能孕育着智能生命的星体。有人甚至明确断言，银河系中就有100万颗左右的行星上可能有生命诞生，而且每颗行星上的生命处于不同的进化阶段。因此，就更不用说离我们更远的其它星系上有智能生命存在的可能了。 Because from the origin of life, as long as there is a certain chemical reaction on a moderate planet in a suitable star system, primitive life can be generated. According to scientific research, this kind of phenomenon is not only unique on the earth, there will definitely be many such phenomena in the whole space. As early as 1961, the famous astronomer Frank derrick proposed an equation for inferring extraterrestrial life, which we usually call "derrick equation". The "derrick equation" has now been recognized by many astronomers all over the world. Based on the calculation of derrick's equation, astronomers optimistically infer that there are a large number of stars in the galaxy alone that may be breeding intelligent life. It has even been explicitly asserted that about one million planets in the galaxy may have life, and that life on each planet is at a different stage of evolution. So, let alone the possibility of intelligent life in other galaxies farther away from us. | 
