Are aliens among us?

被引：4

作者：

Davies, Paul ^{[1
]}

机构：

[1] Arizona State Univ, Beyond, Tempe, AZ 85287 USA

来源：

SCIENTIFIC AMERICAN | 2007年 / 297卷 / 06期

关键词：

D O I：

10.1038/scientificamerican1207-62

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Exotic microogranisms are biochemically different from all known organisms. The best place to look for alternative life-forms are ecologically isolated niches such as ocean-bottom volcanic vents. Alien microbes could incorporate unusual amino acids such as isovaline and pseudoleucine, which have been found in meteorites.

引用

页码：62 / 69

页数：8