books.google.fr - With current interest in extraterrestrials at a peak, this book is a collection of original and reprinted articles advancing the latest scientific ideas as to the possible existence and nature of extraterrestrial intelligent life. Usually this subject is treated only in popular media, such as science...https://books.google.fr/books/about/Extraterrestrials.html?hl=fr&id=EH86AAAAIAAJ&utm_source=gb-gplus-shareExtraterrestrials
