Here's a list of readings worth checking out:
Martin Dominik andJohn C. Zarnecki
The detection of extra-terrestrial life and the consequences for science and society
Phil. Trans. R. Soc. A February 13, 2011 369 (1936) 499-507; doi:10.1098/rsta.2010.0236
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Baruch S. Blumberg
Astrobiology, space and the future age of discovery
Phil. Trans. R. Soc. A February 13, 2011 369 (1936) 508-515; doi:10.1098/rsta.2010.0239
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Malcolm Fridlund
Extra-terrestrial life in the European Space Agency’s Cosmic Vision plan and beyond
Phil. Trans. R. Soc. A February 13, 2011 369 (1936) 582-593; doi:10.1098/rsta.2010.0233
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