| Exploring scientific principles as well as science fiction, Jack Challoner asks: Are we alone? After examining alien stereotypes from vampires to the 'greys', he describes how scientists are exploring the possibilities of alien life, looking for clues in the extreme environments of our own planet, the moons and planets of our solar system, and planets orbiting distant stars. Finally, he looks at the possibilities for communicating with other intelligent life forms. Published in conjunction with The Science Museum.
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