If elementary life forms are common throughout the cosmos, could intelligent beings have evolved elsewhere, and are they seeking us out? A father-and-son team of scientists-both with research backgrounds in astronomy and physics-gives us the most up-to-date scientific answers about extraterrestrial civilizations and our attempts to find them. If they exist, why haven't we been able to make contact? Could they be reluctant or unable to make themselves known? If aliens visited us before recorded history, are we now overdue for another visit? Even if we discount most UFO sightings as erroneous, how do we explain that more than four million Americans claim they have been abducted by aliens? Is there a case to be made for a future scientific study of UFOs? Here, in language requiring no prior specialized knowledge, the authors pull together the strands from all plausible scientific answers to present a unique merging of current astronomical findings with philosophical interpretation of the techniques used in the search for extraterrestrial intelligence.

About the Author

David Clark, Ph.d., author of Cosmos from Space, led the Space Astronomy research team at the Rutherford Appelton Laboratory in Oxford. His son, Andrew Clark, is a physicist and philosopher. They both live in Oxford, England.

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