Summary: Since the dawn of history, humans have pondered whether or not other beings exist in our universe. In this fascinating volume, leading experts provide a critical analysis of the plausibility that other intelligent life forms do exist. They debate many interesting aspects of the subject, such as: claims that extraterrestrial lifeforms have already visited Earth; interstellar travel and interstellar migration; space settlements; the evolution of life and possible alter ...show morenate forms of life; the search for extraterrestrial intelligence; and the frequency of planetary systems in the galaxy. The book represents a range of viewpoints from the fields of astronomy, physics, chemistry, biology, and engineering, and includes such researchers as Jared Diamond, Freeman Dyson, Gerald Feinberg, Ernst Mayr, James Oberg, Robert Shapiro, Robert Sheaffer, and Virginia Trimble. The second edition benefits from new material on the biological and chemical aspects of the debate. To date, exploration of the solar system and observations with telescopes that probe deep space have come up empty handed in searches for evidence of extraterrestrial life, but that will not stop the readers of this book from continuing to wonder whether or not we are alone in the universe. ...show lessEdition/Copyright: 2ND 95
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