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Delta
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Illustration comparing the sizes of various Delta rocket launch vehicles, including Thor-Delta, Delta A, Delta D, Delta 2000, Delta II, Delta IV Medium+ (5,2), and Delta IV Heavy, shown side by side with height scales in meters and feet. Thor-Delta rocket used to launch the TIROS 4 weather satellite, Feb. 8, 1962. Delta G (also called Thrust-Augmented Improved Delta) launching Biosatellite 1, Dec. 14, 1966. Launch of the Fermi Gamma-Ray Space Telescope by a Delta II launch vehicle from Cape Canaveral, Florida, June 11, 2008. Boeing Delta IV Medium+ rocket lifting off from a launch pad amid flames and smoke.
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Nicolaus Copernicus. Nicolas Copernicus (1473-1543) Polish astronomer. In 1543 he published, forward proof of a Heliocentric (sun centered) universe. Coloured stipple engraving published London 1802. De revolutionibus orbium coelestium libri vi.
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Delta: References & Edit History

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  • The Editors of Encyclopaedia Britannica
    Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. They write new content and verify and edit content received from contributors.

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Article History

Type Description Contributor Date
Add new Web site: Encyclopedia Astronautica - Delta. Aug 05, 2019
Illustration of seven Delta launch vehicles added. Jun 25, 2012
Add new Web site: U.S. Centennial of Flight Commission - Delta Expendable Launch Vehicle. Nov 30, 2011
Article thoroughly revised and updated. Mar 10, 2011
Article added to new online database. Jul 20, 1998
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