Covering a range of topics, including the search for life in the solar system, the origins of life, UFOs, and aliens in science fiction, this work examines the ... » 

Covering a range of topics, including the search for life in the solar system, the origins of life, UFOs, and aliens in science fiction, this work examines the question of other biological life in the universe, and the attempts to answer it in the 20th century. «