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Professor Paul Davies, a physicist at Arizona University will tell a meeting at the Royal Society that the best way of proving that extra-terrestrial life exists elsewhere in the universe is to use evidence from earth.
亚利桑那大学的Paul Davies教授将在皇家学会的一次会议上提出，证明外星生命存在的最好方法就是利用地球上已有的证据。
The meeting at the Royal Society, which will include representatives from Nasa, the European Space Agency and the UN Office for Outer space Affairs marks the 5th anniversary of the Search for Extra-Terrestrial Intelligence (SETI) programme. Prof Davies said: "We need to give up the notion that ET is sending us some sort of customised message and take a new approach."
此次会议标志着寻找外星智慧生物计划发起5周年，与会者包括来自国家航空暨太空总署、欧洲航天局和联合国外星生命研究办公室的代表。Davies教授说：“外星人向我们发送特定信息的这个说法该改改了，我们必须实行新的探索方案。”
He suggested that the search could focus on deserts, volcanic vents, salt-saturated lakes and the dry valleys of Antarctica - places where ordinary life struggles to survive - to find "weird" microbes that belong to a "shadow biosphere".
他建议说，对外星生命的搜寻应当集中在沙漠、火山口、盐水湖和南极洲的干燥山谷——在这些地方普通的地球生物极难生存——以找到属于“阴影生物圈”的怪异微生物。
Felissa Wolfe-Simon, from the US Geological Survey, is currently looking at the possibility that arsenic, found in contaminated places such as the Mono Lake in California, might support forms of life in the same way as other life forms use phosphorous.
美国地质调查局的Felissa Wolfe-Simon正在研究利用砷——受污染地区，如加州的莫诺湖中可以找到——发展生命的可能性，就像有些生命形式可以利用磷那样。
However, Professor Colin Pillinger, who led the Beagle 2 Mars landing mission remains sceptical. He said: "I prefer to deal in scientific fact - this is wildly science fiction. You"d be off your trolley to go searching for arsenic-based life." Prof Pillinger argues that Mars is the most likely place to find alien life.
然而，曾领导“猎兔犬二号”火星登陆计划的Colin Pillinger教授对此持怀疑态度。他说：“我倾向于讨论科学事实——而这种说法只是纯粹的科幻小说。如果你想找到靠砷生存的生命，那简直是疯了。”Pillinger教授认为火星是最有可能找到外星生命的地方。
The conference will also discuss how humans might respond to the discovery of extra-terrestrial intelligence.Albert Harrison from University of California said: "It is easy to imagine scenarios resulting in widespread psychological disintegration and social chaos, but reactions to false alarms and survey results suggest that the predominant response to the discover of a microwave transmission from light years away is likely to be equanimity, perhaps even delight."
此次皇家学会会议还将讨论一旦发现外星智慧生命，人们将如何应对的问题。加州大学的Albert Harrison 教授说：“我们很容易想象因此造成的大规模心理失衡和社会混乱。但是人们曾对虚假信息做出的反应和调查结果都显示，一旦发现从几光年远处传来的微波信号，大部分人都会冷静面对，甚至觉得很高兴。”
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