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The Explorers of Mars Hill
William Lowell Putnam
其他書名
More than a Century of History at Lowell Observatory
出版Light Technology Publishing, 1994-08-01
主題Body, Mind & Spirit / GeneralReligion / SpiritualityHistory / United States / State & Local / Southwest (AZ, NM, OK, TX)
ISBN16223367989781622336791
URLhttp://books.google.com.hk/books?id=2FS9Yt8uCvkC&hl=&source=gbs_api
EBookSAMPLE
註釋Established in 1894 in Flagstaff, Arizona by Percival Lowell, the Lowell Observatory on Mars Hill is still remembered as the site of numerous important astronomical firsts. The great recessional velocities of galaxies were first observed here in the years immediately before the first world war, a discovery that ultimately led scientists to the realization that our universe is expanding. In 1930, the dwarf planet Pluto was discovered at Lowell by astronomer Clyde Tombaugh. This volume is a series of vignettes in the observatory's history, from its foundation and early years under Lowell's guidance to its more modern-day accomplishments. It is richly illustrated with photographs from the Lowell archives.