Astrobiology, ethics, and philosophy / Bill Stoeger, Chris Impey, and Anna H. Spitz -- Lessons from Earth : towards an ethics of astrobiology / Carol E. Cleland and Elspeth M. Wilson -- Astrobiology and beyond : from science to philosophy and ethics / William R. Stoeger -- Beyond Horatio's philosophy : biological evolution - the "plurality of worlds" concept / Martinez J. Hewlett -- The wonder called cosmic oneness : towards astroethics from Hindu and Buddhist wisdom and worldviews / Nishant Alphonse Irudayadason -- Social and ethical implications of creating artificial cells / Mark A. Bedau and Mark Triant -- Space exploration and searches for extraterrestrial life : decision making and societal issues / Margaret S. Race -- Astrobiology and society : the long view / Christopher P. McKay -- Planetocentric ethics : principles for exploring a solar system that may contain extraterrestrial microbial life / Woodruff T. Sullivan, III -- Contact : who will speak for Earth and should they? / Jill Tarter -- AstroEthics : engaging extraterrestrial intelligent life forms / Ted Peters -- A scientifically minded citizenry : the ethical responsibility of all scientists / Erika Offerdahl -- Survival ethics and astrobiology / Neville Woolf.