"I could not put the book down! With the rare passages of Venus across the sun's face as their theme, Sheehan and Westfall transport the reader through centuries of exciting historical drama. This book provides an enthralling trip through the history of astronomy." –Clark R. Chapman, Institute Scientist, Southwest Research Institute, Boulder, Colorado
"A masterful work– full of mystery, intrigue, passion, and danger. A wild and enchanting romp through time, as eminent scientists, disillusioned egoists, impassioned mathematicians, and preeminent explorers chase the shadow of Venus around the globe on a grail-like quest for the 'perfect number.'" –Steve O'Meara, Contributing Editor, Sky & Telescope
"A page-turning account of the circumstances and history of one of nature's rarest phenomena. Passion, obsession, frustration, adventure, rivalry, and disaster–above all, the triumph of intellect to fathom the depths of space– are all exemplified in this fascinating tale of scientific endeavor." –Richard Baum, Director Emeritus, Mercury and Venus Section of the British Astronomical Association
"An exciting, colorful, and definitive account of the history of an extremely rare astronomical phenomenon. Using the detailed instructions provided, the book will inspire readers to view Venus as it transits the sun for the first time since 1882." –Steven J. Dick, NASA Chief Historian
"What a heroic human quest to catch a glimpse of Venus in Silhouette in front of the sun! The scientific payoff was nothing less than the confirmation of Copernican theory. Incredibly, transits of Venus portend the discover of dozens of earthlike planets as they transit their host suns, causing them to wink in the night sky." –Geoff Marcy, Discoverer of Extrasolar Planets, University of California, Berkeley
"Sheehan and Westfall capture the human spirit that drove a scientific collaboration spanning five centuries. This continuum of humanity painted over the petty egos of individual scientists, the setbacks of war, bad weather, and human mortality to finally take measure of the rare transits of Venus and thereby reveal the size of Venus and the earth-sun distance. Just in time for the next silhouetting of Venus in June 2004, this book shoes us why the tiny transit of Venus is a big deal!" –Debra Fischer, Professor of Astronomy, San Francisco State University
