Where would you look for alien life? An astronomer and science popularizer explains the basics of astrobiology to outline five plausible scenarios for finding extraterrestrials
It takes Jon Willis, astronomy professor at the University of Victoria in British Columbia, 170 pages – the length of a Henry James short story, for Pete’s sake – to get around to the Drake Equation in his winning debut, All These Worlds Are Yours: The Scientific Search for Alien Life, but we should probably deal with it immediately. In 1961, at a conference in West Virginia, astronomer Frank Drake worked up an exotic-looking equation on a blackboard. Drake had just recently completed a project designed to detect alien radio broadcasts from the region of the star systems Tau Ceti and Epsilon Eridanus, and the blackboard equation he wrote has become a signature parameter for the whole subject of Willis’s book, astrobiology.
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