The Frames were only a realization of the ultimate form of escape. Books, films, sensors, complete total experience - and finally the Frames. The saviors of civilization had shown the way: move the tribes of Americans to Europe, the tribes of the Germans to Spain, the tribes of the English to Switzerland and permutate the combinations endlessly. Use trains, then aircraft, then spaceships. The Frames of the Thirtieth Century were a logical extension of the Mechanical Age's exploitation of the means of mass travel. Now, whole populations moved to new areas of experience. New worlds - new re-created worlds - were manufactured for them. And it had all begun on Talisker. But whatever had left the monstrous scenery on Talisker's desert had not begun anywhere in our universe.

The purpose of the workshop was to reevaluate the existing guidelines for the probability of growth of terrestrial organisms on Mars that were established by the National Academy of Sciences following the Viking Mission.

Habitable Planets for Man examines and estimates the probabilities of finding planets habitable to man, where they might be found, and the number there may be in our own galaxy. The author presents in detail the characteristics of a planet that can provide an acceptable environment for humankind, itemizes the stars nearest the earth most likely to possess habitable planets, and discusses how to search for habitable planets. Interestingly for our time, he also gives an appraisal of the earth as a planet and describes how its habitability would be changed if some of its basic properties were altered. This is a reprint of an edition originally published in 1964.

This expert guide, written by a major figure at the NASA Marshall Spaceflight Center, presents an authoritative and comprehensive survey of the present-day state-of-the-art in the field of extrasolar and interstellar space exploration, focusing on the most promising techniques. It looks at potential missions and explores the many exciting ideas being developed to probe the planets and nearby stars for signs of life. Because of the tremendous current interest in the search for extrasolar life and extraterrestrial intelligence, this is a timely and illuminating survey.

At one level, this book surveys recent findings about the existence of planets orbiting other sun-like stars, such as 51 Pegasi (discovered in 1995) and Tau Bootis. It addresses questions such as what life is and what intelligent life is, as well as theories about how life evolved on Earth from basic molecules into more complex organic compounds leading to DNA. The existence of similar molecules on other planets in our solar system, as well as in meteorites that land on Earth every year, is used in an argument for the evolution of such compounds - the building blocks of life - outside Earth. At the same time, the author applies the laws of large numbers to the immense size of the known universe, with its billions of galaxies, each containing many billions of stars, to argue the probability that there is life elsewhere.