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, it could have been very different. Had the solar system happened to be in the midst of a star cluster, we might have many more bright stars in the sky. Yet had it been located beyond the edge of the Milky Way galaxy, we might have no stars at all. If Venus or Mars had a moon as large as ours, we would be able to view it easily with the unaided eye. Given these or other alternative skies, what might Ptolemy or Copernicus have concluded about the center of the solar system and the Sun? This book not only examines the changes in science that these alternative solar, stellar, and galactic arrangements would have brought, it also explores the different theologies, astrologies, and methods of tracking time that would have developed to reflect them. Our perception of our surroundings, the number of gods we worship, the symbols we use in art and literature, even the way we form nations and empires are all closely tied to our particular (and accidental) placement in the universe. Many Skies, however, is not merely a fanciful play on what might have been. Upgren also explores the actual ways that human interference's such as light pollution are changing the night sky. Our atmosphere, he warns, will appear very different if we have a belt of debris circling the globe and blotting out the stars, as will happen if advertisers one day pollute space with brilliant satellites displaying their products. From fanciful to foreboding, the scenarios in Many Skies will both delight and inspire reflection, reminding us that ours is but one of many world views based on our experience of a universe that is as much a product of accident as it is of intention.

Scientists have delved deeply into the smallest particles of matter and have extended their view to the far reaches of the universe, but still seem unable to predict the temperature five days hence. In this book, two scientists examine progress in the fields of meteorology and climatology. Amid colourful anecdotes of the Galpagos, Siberia, and places closer to home, they describe the earth's atmosphere, its origin and structure, and the forces that have shaped and continue to affect it. They explore temperature, pressure, and other properties of air and weather, including warm and cold fronts, highs and lows, clouds, trade winds, prevailing westerlies, and sky phenomena such as rainbows, halos, coronae, and sun dogs. The authors end with a discussion of the major threats to earth's atmosphere brought on by human activity, including global warming and ozone depletion, and argue that pure science - not politics - should dictate our policy responses.

Do you sometimes wonder why the sky at dusk is filled with color, or how the moon controls the tides? Why do stars twinkle and planets don't? Filled with science and lore, with references to myths, legends, and "high" and popular culture, this "naked-eye" guide (no telescope required) demystifies the celestial in accessible, instructive, and entertaining prose.Upgren tells us why werewolves only come out at night and how to find Betelgeuse. He discusses twilight, the seasons and their causes, our solar system, light and darkness, weather, stars and latitude, the moon, light pollution, and the planets. "Night Has a Thousand Eyes" is the perfect resource for amateur astronomers and meteorologists of all ages who pause to enjoy sunsets and identify constellations on a starry night.