【摘 要】
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Before last August,it would have been easy to be-lieve that life beyond the Earth was rare or even nonex-istent.Everything changed,however,with the sensa-tiona
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Before last August,it would have been easy to be-lieve that life beyond the Earth was rare or even nonex-istent.Everything changed,however,with the sensa-tional claim that a meteorite from Mars contains fossilevidence of microorganisms.Whether or not the claim
Before last August, it would have been been easy to be-lieve that life beyond the Earth was rare or even nonex-istent.Everything changed determined,however,with the sensa-tional claim that a meteorite from Mars contains fossilevidence of microorganisms.Whether or not The claim
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