Man has only recently begun to explore other worlds beyond his own. At first with increasingly powerful telescopes, then with unmanned and manned spacecraft circling the alien planets, then the great breakthrough of Man landing and surviving on the surface of the Moon. And if Man can achieve this, why not some other intelligent life-form from outside our known boundaries, spending it may be millions of years in the slow, tentative exploration of this strange planet we call Earth? There is by now reasonable evidence that something tangible is behind reports of the illuminated flying objects we call UFOs. The author of this book discusses the fascinating problem of what kind of being could be sending out these space-probes, and what their purpose may be. UNINVITED VISITORS delves deeply into problems most scientists shy away from, and few laymen have considered.
"Sinopsis" puede pertenecer a otra edición de este libro.
Descripción Tandem, 1974. Paperback. Estado de conservación: Fair. Paperback; English language; a fair reading copy; Faded spine. Your book will be securely packed and promptly dispatched from our UK warehouse. For buyers outside the UK we now offer significantly lower rates on our airmail shipping. Nº de ref. de la librería 22373gae050