James Bradley

Portrait of Bradley by [[Thomas Hudson (painter)|Thomas Hudson]], {{circa|1744}} James Bradley (1692–1762) was an English astronomer and priest who served as the third Astronomer Royal from 1742. He is best known for two fundamental discoveries in astronomy, the aberration of light (1725–1728), and the nutation of the Earth's axis (1728–1748).

These two discoveries were called "the most brilliant and useful of the century" by Jean Baptiste Joseph Delambre, historian of astronomy, mathematical astronomer and director of the Paris Observatory. In his ''History of astronomy in the 18th century'' (1821), Delambre stated:
"It is to these two discoveries by Bradley that we owe the exactness of modern astronomy. ... This double service assures to their discoverer the most distinguished place (after Hipparchus and Kepler) above the greatest astronomers of all ages and all countries."
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  1. by Bradley, James, 1954-
    Published 2000
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  2. Flags of our fathers
    heroes of Iwo Jima
    Book
    by Bradley, James, 1954-
    Published 2005
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  3. The imperial cruise
    a secret history of empire and war
    Book
    by Bradley, James, 1954-
    Published 2009
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  4. Flyboys
    a true story of courage
    Book
    by Bradley, James, 1954-
    Published 2003
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  5. The imperial cruise
    a secret history of empire and war
    large type
    by Bradley, James, 1954-
    Published 2009
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  6. by Bradley, James, 1954-
    Published 2000
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  7. Flags of our fathers
    videorecording (DVD)
    Published 2007
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  8. Flags of our fathers
    videorecording (Blu-Ray)
    Published 2007
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