迄今为止,人们还没有看到一幅令人信服的关于外星人的图片或其它的影视资料。在有关文章或科幻小说中,通常把外星人描绘成与地球人类似的模样,或是大头,或是凸眼或是细颈,或是长着带蹼的手足,总之是与地球人相差不多。但是,如果我们从生命的演化历史及其与所处环境的相关性上来讨论外星人究竟应该是什么模样时,也许会产生令人兴奋的新奇结论。 So far, people have not seen a convincing picture of aliens or other film and television information. In related articles or science-fiction novels, aliens are often portrayed as human-like, or bulky or eyelid or neck, or with webbed hands and feet, in short, with the Earth’s human face almost. But if we discuss the alien from the evolutionary history of life and its relevance to the environment in which we live, we may find exciting and novel conclusions.