A SEARCH FOR LIFE ON EARTH FROM THE GALILEO SPACECRAFT

被引：297
作者：
SAGAN, C
THOMPSON, WR
CARLSON, R
GURNETT, D
HORD, C
机构：
[1] JET PROP LAB,ATMOSPHER & COMETARY SCI SECT,PASADENA,CA 91109
[2] UNIV IOWA,DEPT PHYS & ASTRON,IOWA CITY,IA 52242
[3] UNIV COLORADO,ATMOSPHER & SPACE PHYS LAB,BOULDER,CO 80309
来源：
NATURE | 1993年 / 365卷 / 6448期
关键词：
D O I：
10.1038/365715a0
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：
In its December 1990 fly-by of Earth, the Galileo spacecraft found evidence of abundant gaseous oxygen, a widely distributed surface pigment with a sharp absorption edge in the red part of the visible spectrum, and atmospheric methane in extreme thermodynamic disequilibrium; together, these are strongly suggestive of life on Earth. Moreover, the presence of narrow-band, pulsed, amplitude-modulated radio transmission seems uniquely attributable to intelligence. These observations constitute a control experiment for the search for extraterrestrial life by modern interplanetary spacecraft.
引用
收藏
页码：715 / 721
页数：7
相关论文
共 34 条
[1]  
[Anonymous], 1977, EVOLUTION ATMOSPHERE
[2]  
BELTON MJS, 1992, SPACE SCI REV, V60, P413, DOI 10.1007/BF00216864
[3]  
BOWKER DE, 1985, REF PUBL NASA, V1139
[4]  
CARLSON RW, 1992, SPACE SCI REV, V60, P457, DOI 10.1007/BF00216865
[5]  
CARLSON RW, IN PRESS ANTARCT J U
[6]  
CHAMEIDES WL, 1992, CHEM ENG NEWS, V60, P38
[7]   The absorption and dissociative or ionizing effect of monochromatic radiation in an atmosphere on a rotating earth Part II. Grazing incidence [J].
Chapman, S .
PROCEEDINGS OF THE PHYSICAL SOCIETY, 1931, 43 :483-501
[8]  
DROSSART PJ, UNPUB PLANET SPACE S
[9]  
FAINBERG J, 1974, SPACE SCI REV, V16, P145, DOI 10.1007/BF00240885
[10]   THE DEEP, HOT BIOSPHERE [J].
GOLD, T .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1992, 89 (13) :6045-6049
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