Read more
Planet Earth has been a familiar concept for a mere fraction of recorded history. Until about the mid-1600s, most humans thought of Earth as immobile, likely either dim or simply invisible from the Moon or anywhere else in the heavens, and not (like the planets) participating in what Galileo called "the dance of the stars."
A Universe of Earths: Our Planet and Other Worlds, from Copernicus to NASA retraces the exhilarating story of how all that changed, and how we came to perceive the Earth as a "wandering star." It's a story that has vastly augmented and enriched our understanding of how Earth and its inhabitants fit into the big picture of the Cosmos.
But almost as soon as humans started to grasp that Earth is a planet, many also began wondering if perhaps the other planets might be earths. This bold conjecture ignited the whole gripping history and literature of space travel, of extraterrestrials, of other worlds. And yet the thesis that the Universe is full of other worlds like Earth has from the start been fuelled more by imagination than by scientific evidence. For all its appeal, it has consistently been undermined by observations of the actual Universe.
A Universe of Earths offers a surprising alternative to that "other worlds" account, one that releases humans not only from the pre-Copernican view of Earth as low, lowly, dark, a cosmic sump, but also from the persistent modern aspersion of Earth as cosmically ordinary, "mediocre," "dethroned." Instead, from Copernicus to the present, we are confronted with the bracing realization that Earth is in the classical sense a star, a dynamically wandering one, and a bright, maybe even peerless participant in the dance of the stars.
List of contents
- 1: Prologue: Discerning the Cosmos
- 2: Copernicus's Giant Leap
- 3: "Little Dark Star"
- 4: Galileo: "Dance of the Stars"
- 5: "Nest of Angels": Early Modern Extraterrestrials
- 6: Star Amid the Darkness
- 7: The Great Copernican Cliché
- 8: The Case Against Copernicus
- 9: Dethroning the Sun
- 10: "Reasoning by Analogy": Earths, Suns, Galaxies
- 11: The Problem of Life
- 12: Cold, Dark Night in a Universe of Galaxies
- 13: "Variety Enormously Greater than Had Been Supposed"
- 14: Junctions on the Road to Star Wars
- 15: Searching for Intelligent Extraterrestrials
- 16: "An Awful Waste of Space"
- 17: "Inevitably Privileged to Some Extent"
- 18: A Precious Planet Earth
- Works Cited
- Acknowledgments
About the author
Dennis Danielson is Professor Emeritus of English at the University of British Columbia. He received the 2011 Konrad Adenauer Research Prize from Germany's Alexander von Humboldt Foundation and was named 2024 Honored Scholar by the Milton Society of America.
Christopher M. Graney is an astronomer and historian of science at the Specola Vaticana (the Vatican's astronomical observatory) and the Vatican Observatory Foundation. He is the author of four books and numerous scholarly and popular articles on the history of astronomy.
