This is a fun read and my biggest complaint is that it came out in 2009 (just as the Kepler space observatory launched) and hasn’t been updated, so there’s a lot of near-future discussion about systems that have since come online.
Conversely, we still haven’t detected extraterrestrial intelligence since then, either. :P
Some might be put off by Seth Shostak’s breezy writing style, peppered with puns and humor, but I felt he always pulled back just in time to let the hard science and sober speculation take over. And if you’ve seen Shostak on TV–having more than a casual interest in astronomy, aliens or some combination thereof makes it likely, as he’s not just SETI’s senior astronomer, he’s also their main go-to for interacting with the media–then the light tone is not surprising. He is passionate about his work, but he is a wonderfully droll person. I suppose that may help when you’re willing to offer straightforward commentary on episodes of Ancient Aliens.
Despite being nearly a decade old at the time of this review, the book remains a thorough examination of SETI’s history, its goals, and its then-current operations. Shostak brackets the nuts and bolts of SETI with his own background leading up to joining the group, and offers tidbits from his work as an advisor on films like Contact and the remake of The Day the Earth Stood Still (he helped them make the scientists sound more like real people and less like jargonbots).
A lot of the book centers around the inevitable questions arising from SETI–what would SETI do if a signal was confirmed? How might the public react? What would aliens look like? How long will it take to scan the visible galaxy? Is it all just a goofy waste of time?
People who favor the “waste of time” side may not be moved by Shostak’s arguments, but most others are likely to come away with an appreciation of SETI’s work, and perhaps even a sense of hope in the continuing search for signs of intelligent life somewhere out in space.
Recommended. (But an updated version would be spiffy.)