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If extraterrestrials ever landed on Earth, they would find us extremely strange. Their first intimation of our existence might well be a Super Bowl broadcast or a stray transmission from the Playboy channel. But, of course, they might seem equally strange to us. How strange? Their senses could be entirely different from ours—they might see in the infrared or “hear” radio waves.What would aliens look like? An intelligent octopus-like creature is certainly plausible. What about odd numbers of limbs—a three-legged alien with three arms and three eyes? What about an entire planet of immobile, silicon-based “trees” that communicate with each other via electrical signals? The Science of Aliens gets weirder still. Could a giant interstellar cloud be “alive” and intelligent? Could creatures live at extremely high pressures and temperatures? And which of these many possibilities would be similar enough to us that they could communicate with them, or they with us? Would they have any interest in abducting us? Would they want to have sex with us?In classic Pickover style, here is speculation at the far edge of knowledge—and beyond. If extraterrestrials ever landed on Earth, they would find us extremely strange. Their first intimation of our existence might well be a Super Bowl broadcast or a stray transmission from the Playboy channel. But, of course, they might seem equally strange to us. How strange? Their senses could be entirely different from oursthey might see in the infrared or hear radio waves.What would aliens look like? An intelligent octopus-like creature is certainly plausible. What about odd numbers of limbsa three-legged alien with three arms and three eyes? What about an entire planet of immobile, silicon-based trees that communicate with each other via electrical signals? The Science of Aliens gets weirder still. Could a giant interstellar cloud be alive and intelligent? Could creatures live at extremely high pressures and temperatures? And which of these many possibilities would be similar enough to us that they could communicate with them, or they with us? Would they have any interest in abducting us? Would they want to have sex with us?In classic Pickover style, here is speculation at the far edge of knowledgeand beyond. What Would Aliens Look Like? An Intelligent Octopus-like Creature Is Certainly Plausible. What About Odd Numbers Of Limbs - A Three-legged Alien With Three Arms And Three Eyes? Could There Be An Entire Planet Of Immobile, Silicon-based Trees That Communicate With Each Other Via Electrical Signals? The Science Of Aliens Gets Weirder Still. Could A Giant Interstellar Cloud Be Alive And Intelligent? Could Creatures Live At Extremely High Pressures And Temperatures? Would They Have Any Interest In Abducting Us? Would They Want To Have Sex With Us?--jacket. 1. What Aliens Look Like -- 2. Alien Senses -- 3. Life At The Edge -- 4. Weirder Worlds -- 5. Origin Of Alien Life -- 6. Alien Sex -- 7. Communication -- 8. Alien Travel -- 9. Alien Abduction -- 10. Conclusion. Clifford Pickover. Includes Bibliographical References (p. [209]-212) And Index. An exploration of the question "Are we alone out there?" applies the cutting-edge scientific breakthroughs of Earthly biology to a speculation on the appearance and habits of extraterrestrial beings If we were to meet actual aliens from outer space, what would they look like? Noted author Clifford Pickover speculates on their appearance, biology, language, even their sex lives.