Br. Guy Consolmagno SJ
Director: Vatican Observatory
Winner, DPS Carl Sagan Medal (2014)
Co-Author with Fr. Paul Mueller SJ: Would You Baptize an Extraterrestrial?

How will humanity first discover ET Life?
Best guess: Chemical signature from the interior of an icy moon
Image of water plumes from Enceladus,taken by the NASA/ESA Cassini 
mission to Saturn
We have already observed water ejected into space from the 
interior of Jupiterís moon Europa and Saturnís moon Enceladus. 
Biomarkers in this water will be strong evidence of life 
in the source oceans underneath the icy moonsí crusts.

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