Home

About

Advanced Search

Browse by Discipline

Scientific Societies

E-print Alerts

Add E-prints

E-print Network
FAQHELPSITE MAPCONTACT US


  Advanced Search  

 
ASP Conference Series, Vol. **VOLUME***, **YEAR OF PUBLICATION** **NAMES OF EDITORS**
 

Summary: **TITLE**
ASP Conference Series, Vol. **VOLUME***, **YEAR OF PUBLICATION**
**NAMES OF EDITORS**
G. A. Tikhov, and the Beginnings of Astrobiology
Danielle Briot1, Jean Schneider1, Luc Arnold2
(1) Observatoire de Paris-Meudon, (2) Observatoire de Haute-Provence
- Introduction - Even being a young scientific field, astrobiology has an in-
teresting and unexpected history. The Russian astronomer Gavriil Adrianovich
Tikhov (1875-1960) was one of the main precursors of astrobiology. Actually,
the word "astrobiology" is older than often though : the definition "the consid-
eration of life in the universe elsewhere than on earth" is yet given by Lafleur
in 1941 in a paper entitled "astrobiology". Tikhov's researches gain a new im-
portance in the viewpoint of the future discovery of new terrestrial extrasolar
planets.
- Study of the Earthshine, then and now - Tikhov studied Earth-
shine as early as 1914 and concluded that Earth seen from space has to be seen
with a pale blue colour because of Rayleigh scattering. More a decade latter,
observations of earthshine were made regularly from 1926 by Danjon and collab-
orators (Danjon 1928, 1954, Dubois 1947). Present observations of Earthshine
find again the Rayleigh scattering (Arnold et al. 2002, Woolf et al. 2002).

  

Source: Arnold, Luc - Observatoire de Haute-Provence

 

Collections: Physics