A test for life on exoplanets: the terrestrial vegetation detection in the earthshine spectrum

Details A test for life on exoplanets: the terrestrial vegetation detection in the earthshine spectrum A test for life on exoplanets: the terrestrial vegetation detection in the earthshine spectrum

Oct 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.514..259a&link_type=abstract

In: Earth-like planets and moons. Proceedings of the 36th ESLAB Symposium, 3 - 8 June 2002, ESTEC, Noordwijk, The Netherlands. E

Physics

Extraterrestrial Planets: Life, Earth: Spectroscopy

Scientific paper

Spectroscopic observations of the Earthshine allowed us to make a relative measurement of the integrated Earth reflectance spectrum in which the terrestrial vegetation signature around λ=700nm has been detected. Therefore we conclude that the terrestrial vegetation, and thus terrstrial life, can be detected remotely when the Earth is seen as a sinlge dot. We also conclude that vegetation can be detected on an extrasolar Earth-like planet, if a spectral resolution around 50 is available.

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