reply to post by The Cyfre
arxiv.org...
If you read page 11 from the recent paper (June 5) by the originator of the study even the author expresses reservations as to how quickly using
Earth's signature as a model will yield results. He qualifies that the instrumentation needed is in the conceptual phase, but remains hopeful.
ET’s Conclusions
In conclusion, if an extraterrestrial (or extrasolar) observer was looking at the
Earth from an astronomical distance, and similarly if we were observing an Earthlike
exoplanet, we would be able to determine some of its properties. From al these
properties, those regarding the possibility of finding life would be:
• Habitability signatures:
Atmospheric composition
Variability and albedo
Spectral shape (Rayleigh scattering, atmospheric properties)
Rotational period
Presence of oceans (glint)
Presence of dynamic weather ... and possibility of liquid water
• Life signatures:
Atmospheric disequilibrium caused by life
• Complex life (plant/animal) signatures:
Presence of complex life (red or other edges)
Fluorescence
Presence of biomass from circular polarization
(more)
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very nice find. just to bad there isent more detail where you can see what they actualy look like 
there are some other videos by him that are worth looking at as well.
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reply to post by elfie
Are you referring to Apollo 10 after they heard the music on the back side of the moon?
www.youtube.com...
Edit to add on-board voice transcripts, starts on pg 197 (Lunar module)
www.jsc.nasa.gov...
[edit on 12-6-2009 by add alone]
[edit on 12-6-2009 by add alone]
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reply to post by elfie
And technology continues to progress..........How long until we finally make that irrefutable discovery?? Good post..
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