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Science fiction writers have been dreaming up planets - and aliens - for years. But recently, astronomers have discovered hundreds of planets far beyond our solar system. Is there life on those planets, too? In fact and in fiction, Stephen Humphrey explores our need to know that we're not alone in the cosmos.

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, Canada Research Chair in Observational Astrophysics at University of Toronto., science fiction novelist., biologist, science writer and science fiction author., Professor of Physics and Astronomy at University of California Irvine, and science fiction author., Assistant Professor at Georgia Institute of Technology, School of Earth and Atmospheric Sciences., Director, Center for SETI Research (until 2012), Bernard M. Oliver Chair for the SETI Institute.Harper Collins Publishers Ltd., 2011.. John Wiley and Sons Inc., 2002.and. Ebury Press , 2013.and(Editors). Lucky Bat Books, 2013.. National Geographic, 2009.(Editor).. Cambridge University Press, 2010.. Sterling. 2013.. Tor Books, 2004.. Ace Hardcover, 2013.. Aspect, 1999.. Lucky Bat Books, 2012.and. Warner Books, 2000.. Faber and Faber, 1961.