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发现外星生命

作者:佚名    文章来源:本站原创    更新时间:2019/2/16

 When and where do you think we will find extraterrestrial life? 你认为我们会在何时何地发现外星生命?
  “If there is abundant microbial life on Mars, I suspect that we will find it within 20 years—if it is enough like our form of life. If an alien life-form differs much from what we have here on Earth, it is going to be difficult to detect. It’s also possible that any surviving Martian microbes are rare and located in places that are difficult for a robotic lander to reach. Jupiter’s moon Europa and Saturn’s moon Titan5) are more compelling places. Europa is a water world where more complex forms of life may have evolved. And Titan is probably the most interesting place in the solar system to look for life. It is rich in organic molecules but very cold and has no liquid water; if life exists on Titan, it will be very different from life on Earth.”
  —Carol E. Cleland, philosophy professor at the University of Colorado Boulder

 

 如果火星上存在大量的微生物,我猜测20年内我们就能发现外星生命——如果这些生命与我们的生命形式足够相似。如果外星的生命形式与我们地球上的生命形式相差太大,那将难以发现。也有可能火星上存活的微生物太稀少,且都生存在登陆机器人难以触及的地方。木卫二和土卫六是更具吸引力的星球。木卫二上有大量的水,在那里更高级的生命形式或许已经进化。要想寻找生命,土卫六也许是太阳系中最有趣的地方。那里有大量的有机分子,但非常寒冷,并且没有液态水。如果土卫六上存在生命,一定与地球上的生命形式大相径庭。”
  ——科罗拉多大学博尔德分校哲学教授卡罗尔·E·克莱兰德

外星生命就在我们身边?

发现外星生命:https://www.ryedu.net/syy/hyyy/201902/57832.html