Is the presence of H2O and O3 in an exoplanet a reliable signature of a biological activity?

Astronomy and Astrophysics

Volumn 341, Issue 1, 1999, Pages 304-311

  Leger A ^a   Ollivier, M ^a   Altwegg, K ^b   Woolf, N J ^c  

^a CNRS   (France)

^b ISSI   (Switzerland)

^c UNIVERSITY OF ARIZONA   (United States)

Author keywords

Comets: individual: Halley; Comets; general; Planetary systems; Solar system: formation

Indexed keywords

EID: 0000490066     PISSN: 00046361     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

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