Taken from first-person accounts and historical documents, this book chronicles more than 300 examples of alien encounters, conspiracy theories, and the influence of extraterrestrials on human events throughout history. Investigating claims of visits from otherworldly creatures, aliens living among us, abductions of humans to alien spacecraft, and accounts of interstellar cooperation since the UFO crash in Roswell, this discussion of the theories and mysteries surrounding aliens is packed with thought-provoking stories and shocking revelations of alien involvement in the lives of Earthlings.

The two most fascinating questions about extraterrestrial life are where it is found and what it is like. In particular, from our Earth-based vantage point, we are keen to know where the closest life to us is, and how similar it might be to life on our home planet. This book deals with both of these key issues. It considers possible homes for life, with a focus on Earth-like exoplanets. And it examines the possibility that life elsewhere might be similar to life here, due to the existence of parallel environments, which may result in Darwinian selection producing parallel trees of life between one planet and another. Understanding Life in the Universe provides an engaging and myth-busting overview for any reader interested in the existence and nature of extraterrestrial life, and the realistic possibility of discovering credible evidence for it in the near future.

If only the war had lasted another six months, then Hitler would have won ... because his scientists stood upon the very brink of inventing flying saucers. That, at least, is the myth as it is currently being peddled today, in books, pamphlets and online; and, if it were true, squadrons of Luftwaffe spacecraft would certainly have made mincemeat out of British Spitfires and American B-52s. But, of course, it is a complete fiction. And yet the sinister myth of Nazi UFOs is surprisingly well developed. If you listen to its champions, escaped Nazis and their indoctrinated offspring are simply hiding in secret Antarctic bases, inside the Hollow Earth, somewhere upon another planet, or even within another dimension, just waiting for the right time to strike again - and this time, armed with saucers and in close alliance with Aryans from other star systems, they stand poised to finish what they started. Some even claim that Hitler and his chief henchmen did not really die in 1945, but were borne away in spirit on flying saucers. Such theories seem insane - but do they have a hidden purpose? White supremacists around the globe have adopted Nazi ufology to draw the gullible into the wider orbit of Far-Right ideology; after all, if the standard version of history is so wrong as to fail to acknowledge that Hitler helped invent UFOs, then what else might historians have got wrong about the Third Reich? Might the Nazis actually have been right all along? Could the Holocaust have been a total hoax? Once they have swallowed the first lie, a person might easily swallow several others. The stories in this book are bizarre: Nazi saucer-pilots fighting alongside Saddam Hussein in the first Gulf War; alien boot-prints whose soles bear swastikas being found in the wake of UFO-landings; the leader of America's Nazi Silvershirts claiming to be in psychic contact with men from other galaxies; and Allied pilots being buzzed by fiery glowing 'foo fighters' during the Second World War. They may seem harmless at first, but they are not. Is it really the white race's destiny to conquer the icy reaches of space under the banner of the 'Aryan world spirit'? Perhaps not, but the conquest of their victims' inner space, not outer space, in the name of Hitlerism is what these latter-day Goebbels truly desire.