茫茫宇宙，除了地球这一颗孕育了生命的星球外，是否其他的星球上也有着生命在延续发展，只是我们至今还未发现罢了。很久开始，科学家便已开始对地外生命进行探索。通过探索得到的信息进行推测假设，以求证外星生命是否真的存在。阅读本书，让我们的视野穿过地球的表面，进入到更加广阔宇宙，一起捕捉其他生命存在的痕迹。
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