Many Skies: Alternative Histories of the Sun, Moon, Planets, and Stars

by Arthur R. Upgren

Book Overview

What if Earth had several moons or massive rings like Saturn? What if the Sun were but one star in a double-star or triple-star system? What if Earth were the only planet circling the Sun? These and other imaginative scenarios are the subject of Arthur Upgren's inventive book Many Skies: Alternative Histories of the Sun, Moon, Planets, and Stars. Although the night sky as we know it seems eternal and inevitable, Upgren reminds us that, just as easily,...

• Format: Hardcover
• Language: English
• ISBN: 0813535123
• ISBN13: 9780813535128
• Release Date: January 2005
• Publisher: Rutgers University Press
• Length: 198 Pages
• Weight: 0.45 lbs.
• Dimensions: 0.8" x 6.6" x 9.3"

Customer Reviews

Thought provoking work of alternate astronomy

Alternate history has become a popular subject in recent years, both in terms of fiction and also in non-fiction, exploring such ideas as what would have happened if Napoleon had not been defeated at Waterloo or if the South had won the Civil War. Upgren in _Many Skies_, explored alternate solar, stellar, and galactic systems and arrangements and what effects these might have had on the history of the world. Upgren divided the book into four sections, chapters in each section either exploring an alternate universe where the sky as it appears on Earth is different or discussing some aspect of astronomy as set-up to an idea for an alternate universe in a following chapter. The chapters described the different sky, why it was different, how this sky could have come to exist, what it would look like to an observer on Earth, and then what effects this might have had on the history of science and the history of the world in general. Often times the discussion of the effects were just questions the author would raise though in several cases he went into more detail. There were many diagrams and charts to help illustrate his points and Upgren did a good job of explaining astronomical terms such as proper motion, retrograde motion, and globular clusters when needed. Part one looked at different systems and arrangements for our Sun and Moon. What if the Earth had three moons? What if the Earth had not one Sun but three? What if the Earth were alone in space with the Sun, with no Moon or other planets, comets, or asteroids? Part two looked at alternate planets in our solar system, including our own. What if the Earth had rings? What if Jupiter existed in the orbit of our Venus? What if a bright planet, known to the ancients, orbited the Sun outside of the primary plane of the solar system, going far to the north or the south of the ecliptic? What if very bright comets were more frequent? What if Mars or Venus had a moon the size of our Moon (if Mars or Venus had a satellite as large and as bright as our Moon it would easily be seen by the unaided eye; if the Moon was seen from Venus when Venus is at its closest, about 26 million miles away, it would outshine all but the Sun and the Earth)? Part three looked at alternate stellar and galactic systems and arrangements. What if a star close to the Earth became a supernova? What if the Pleiades Cluster was about as close as the Hyades is now, not thousands of light years away but instead only a hundred light years away, with its stars visible in the daytime? What if the solar system were above the galactic plane, perhaps well outside and to the north of it, with the northern sky completely black and empty to the naked eye? Part four didn't really delve as much into different skies but touched on other topics, including issues of light pollution and astronomical causes of mass extinction on Earth. Not surprisingly, many of the various scenarios dealt primarily with alternate histories of science (

A vivid and contemplative account

Emeritus astronomy professor Arthur Upgren presents Many Skies: Alternative Histories Of The Sun, Moon, Planets And Stars, an imaginative discussion of how bodies in the night sky could just as easily have been arranged in very different ways. Exploring scenarios such as if the Earth had multiple moons, or rings like Saturn, or if the Sun were a double-star or triple-star system, Many Skies contemplates how different theologies, astrologies, and methods of tracking time would have evolved. Many Skies also scrutinizes how human interferences such as light pollution is changing the night sky, and warns that increased satellites displaying products will change the appearance of Earth's atmosphere. A vivid and contemplative account, as appealing, understandable, and enjoyable for lay readers as for experts in the field.