THE LITTLE BOOK OF ALIENS

A jocular title does not even hint at the real wonders of this cook’s tour of alien life.

Astrophysicist Frank, author of Light of the Stars and The Constant Fire, has been obsessed with the idea of extraterrestrial life since childhood. After years of dreaming about exploring the cosmos for signs of intelligent life, he and other scientists are on the threshold of a new era of unprecedented discovery in the field of astrobiology. He details not only recent revelations in the detection of exoplanets, but also the search for technosignatures, indicators of technologically advanced species on worlds light years distant. These are not merely elements of science fiction. They are realities now within human reach thanks to the continuing development of ultra-powerful telescopes and to the sea change in a scientific culture that once scoffed at the Search for Extraterrestrial Intelligence (SETI). Frank’s enthusiasm is contagious, occasionally over-exuberant, and there is plenty of hard science in this survey, which the author presents with economy and accessibility. The book brims with fascinating facts and speculations, from the particulars of astrobiology to Dyson spheres. Frank’s cosmic tour makes stops at such milestones as the Fermi Paradox and the Drake Equation, showing how these 1950s advances continue to inform our thinking about the possibility of technological civilizations. The author also recounts the origins and current manifestations of the UFO craze and how the advancement of actual science has been impeded by 70 years of pop culture images that haunt our collective expectations. Frank advises we look for alien life where it most likely exists: deep space. He also stresses the key point that we have only begun to peer into the universe with instruments capable of breakthrough discoveries, a useful riposte to critics of the effort. Throughout, Frank champions the importance of demanding standards of evidence: “They are, literally, why science works.”

Solid data and reasoned conjecture strike a harmonious balance in a new SETI.