Interest in exoplanets--the worlds of other stars--is not new. From the late 17th century until the end of the 19th, almost all educated people believed that the stars are suns surrounded by inhabited planets--a belief that was expressed not in science fiction, but in serious speculation, both scientific and religious, as well as in poetry. Only during the first half of the 20th century was it thought that life-bearing exoplanets are rare. This is not a science book--rather, it belongs to the category known as History of Ideas. First published by Atheneum in 1974, it tells the story of the rise, fall, and eventual renewal of widespread conviction that we are not alone in the universe. In this 2012 updated edition the chapters dealing with modern speculation have been revised to reflect the progress science has made during the past 40 years, including the actual detection of planets orbiting other stars. However, it is not intended to be more than a brief introduction to today's views; its focus is on little-known facts about those of the past. Why should we care what our forebears believed? Now, the question of ET life is a matter for investigation by science. Yet it's significant that most educated people of past centuries were convinced that other inhabited worlds exist, without any scientific evidence whatsoever. This historical fact reveals that human beings have an instinctive sense of kinship with the wider universe and a desire to see the realms that lie beyond this one small planet--and perhaps, eventually, to go there. Our ancestors conceived of such voyages only in a spiritual sense, as occurring after death. But we who have taken our first small steps into space are aware that our descendants may set foot on the worlds of other suns. Just as in the 17th century people were initially upset by the new knowledge that the stars are suns scattered in space rather than lights fixed to a nearby sphere, the growing awareness that Earth is not safely isolated from whatever lies beyond makes many of our contemporaries uneasy. Thus today's predominant feelings about spaceships are ambivalent. Nevertheless, if an impulse toward belief that we are not alone in the universe is indeed an innate characteristic of human beings, as the past spread of belief in inhabited exoplanets suggests, we can be sure that those who follow us will not turn back from becoming spacefarers.

Detailed, scholarly study examines the ideas that developed between 1750 and 1900 regarding the existence of intelligent extraterrestrial life, including those of Kant, Herschel, Voltaire, Lowell, many others. 16 illustrations.

The lead essay in this cellection by the author of Newbery honor book Enchantress from the Stars deals with issues that she wants readers of the novel to be aware of. Too often misinterpretations arise when the story is thought to be an allegory about relations between different cultures of our own world, when it is literally about possible relations between different "human" species of other worlds that have evolved for vastly different lengths of time. The two situations are not comparable, and assuming that they are leads some readers to think the book endorses a view of cultural relations that was rejected by anthropologists long ago. Though much in the story does apply to relationships between individual people of our world, as far as culture is concerned its aim is to counter the all-too-common science fiction view of extraterrestrial aliens either as hostile or as benevolent beings who will step in to solve Earth's problems. Whether or not there really are any aliens, how young people think of them affects how rhey feel about the future of humankind. The rest of the essays in this book are about the author's other Young Adult novels and about subjects relevant to them such as the importance of space exploration and the reality of psi powers. They have been selected from her collections Reflections on Enchantress from the Stars and Other Essays, the Future of Being Human and Other Essays, and From This Green Earth: Essays on Looking Outward, two of which are available only as ebooks. Because of their length these collections cannot be issued as paperbacks at reasonable prices, so this short sampler has been produced for the benefit of readers who have a strong preference for print books and/or audioboox. The following essays are included. Reflections on Enchantress from the Stars Perspective on the Future: The Quest of Space Age Young People Faith as the Focus of Children of the Star Update on the Critical Stage: The Far Side of Evil's Relevance Today A Response to Some Reactions to Journey Between Worlds Breaking Out from Earth's Shell The Role of Psi in Human Affairs The Roots of Disbelief in Human Mind Powers Transhumanism Is a Dead End The Worship of Medical Authority Why I Don‟t Read Much Science Fiction

In this comprehensive and interdisciplinary volume, former NASA Chief Historian Steven Dick reflects on the exploration of space, astrobiology and its implications, cosmic evolution, astronomical institutions, discovering and classifying the cosmos, and the philosophy of astronomy. The unifying theme of the book is the connection between cosmos and culture, or what Carl Sagan many years ago called the “cosmic connection.” As both an astronomer and historian of science, Dr. Dick has been both a witness to and a participant in many of the astronomical events of the last half century. This collection of papers presents his reflections over the last forty years in a way accessible to historians, philosophers, and scientists alike. From the search for alien life to ongoing space exploration efforts, readers will find this volume full of engaging topics relevant to science, society, and our collective future on planet Earth and beyond.

A comprehensive edition covering the full range of Tennyson's career, fromhis juvenilia through to the poetry written in his eighties. It includes over 60 poems, and 'The Princess', 'In Memoriam', 'Maud', 'Enoch Arden' in their entirety, as well as several of the 'Idylls of the King'. It also includes a selection from Tennyson's letters and his son Hallam's memoir.

Scientists and other keen observers of the natural world sometimes make or write a statement pertaining to scientific activity that is destined to live on beyond the brief period of time for which it was intended. This book serves as a collection of these statements from great philosophers and thought–influencers of science, past and present. It allows the reader quickly to find relevant quotations or citations. Organized thematically and indexed alphabetically by author, this work makes readily available an unprecedented collection of approximately 18,000 quotations related to a broad range of scientific topics.