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- DescriptionMuch of what is kwn about the universe came from the study of celestial shadows. This book looks in detail at the way eclipses and other celestial shadows have given us amazing insights into the nature of the objects in our solar system and how they are even helping us discover and analyze planets that orbit stars other than our Sun. A variety of eclipses, transits, and occultations of the mooons of Jupiter and Saturn, Pluto and its satellite Charon, asteroids and stars have helped astromers to work out their dimensions, structures, and shapes - even the existence of atmospheres and structures of exoplanets. Long before Columbus set out to reach the Far East by sailing West, the curved shadow of the Earth on the Moon during a lunar eclipse revealed that we inhabit a round world, a globe. More recently, comparisons of the sunlit and Earthlit parts of the Moon have been used to determine changes in the Earth's brightness as a way of monitoring possible effects in cloud coverage which may be related to global warming. Shadows were used by the Greek mathematician Eratosthenes to work out the first estimate of the circumference of the Earth, by Galileo to measure the heights of the lunar mountains and by eighteenth century astromers to determine the scale of the Solar System itself. Some of the rarest and most wonderful shadows of all are those cast onto Earth by the lovely Evening Star Venus as it goes between the Earth and the Sun. These majestic transits of Venus occur at most two in a century; after the 2012 transit, there is t a chance to observe this phemen until 2117, while the more common sweep of a total solar eclipse creates one of the most dramatic and awe-inspiring events of nature. Though it may have once been a source of consternation or dread, solar eclipses w lead thousands of amateur astromers and eclipse-chasers to travel the globe in order to experience the dramatic view under totality. These phemena are among the most spectacular available to observers and are given their full due in Westfall and Sheehan's comprehensive study.
- Author BiographyWilliam Sheehan has written many books on astronomy, including: Planets and Perception (1988), The Immortal Fire Within: the life and work of Edward Emerson Barnard (1995), The Planet Mars (1996), In Search of Planet Vulcan (with Richard Baum; 1997), Epic Moon (with Thomas Dobbins; 2001), and Transits of Venus (with John Westfall; 2004). He is a consultant to the International Astronomical Union's Working Group on Planetary System Nomenclature, a Special Research Fellow in history of astronomy at the Lowell Observatory, a contributing editor to Sky & Telescope magazine and an Honorary Fellow of the Royal Astronomical Society of Canada. He is also past fellow of the John Simon Guggenheim Memorial Foundation, and a recipient of the Gold Medal of the Oriental Astronomical Association. Asteroid no. 16037 has been named Sheehan in his honor by the I.A.U. With Springer, he has published a translation of James Lequeux's biography of the French astronomer U.J.J. Leverrier: Le Verrier-Magnificent and Detestable Astronomer (with Bernard Sheehan; 2013); Galactic Encounters (with Chris Conselice; 2014); and a translation of Camille Flammarion's The Planet Mars (with the late Sir Patrick Moore; 2014). Professionally, William Sheehan is a psychiatrist. He is married, with two sons. He divides his time between his psychiatric and astronomical activities and between homes in Willmar, Minnesota and Flagstaff, Arizona. Among Sheehan's most recent observations have been those of Venus's atmosphere made at Lowell Observatory, during the transit of Venus of June 5-6, 2012, as a member of the international Venus Twilight Experiment. For most of his life a denizen of the Bay Area, Dr. Westfall majored in geography at the University of California, Berkeley (BA 1960) and the George Washington University (MA 1964, PhD 1969). Employed by the (then) Coast and Geodetic Survey from 1961-64, he joined the faculty of San Francisco State University's Department of Geography and Human Environmental Studies in 1968, teaching courses in quantitative and historical geography and remote sensing, retiring in 2005. Dr. Westfall's interest in astronomy dates back to the late 1940s, when he joined the Eastbay Astronomical Society, becoming a member of the Association of Lunar and Planetary Observers (ALPO) in 1953. He currently serves on the ALPO board of directors and is the coordinator of its Mercury/Venus Transit Section and an assistant coordinator in its Jupiter Section (Galilean satellite events). He has authored the book Atlas of the Lunar Terminator (Cambridge) and coauthored Transits of Venus (Prometheus) with William Sheehan. He has chased 12 total solar eclipses, three annular eclipses and three planetary transits (plus two from home). Dr. Westfall currently observes lunar eclipses, asteroid occultations of stars, and Jupiter satellite eclipses from his backyard in the relatively clear skies of Antioch, his favorite telescopes being a C14 and a C5.
- Author(s)John Westfall,William Sheehan
- PublisherSpringer-Verlag New York Inc.
- Date of Publication20/11/2014
- SubjectAstronomy, Space & Time
- Series TitleAstrophysics and Space Science Library
- Series Part/Volume Number410
- Place of PublicationNew York
- Country of PublicationUnited States
- ImprintSpringer-Verlag New York Inc.
- Content Note228 black & white illustrations, 11 colour illustrations, biography
- Weight1384 g
- Width155 mm
- Height235 mm
- Spine40 mm
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