(Encyclopedia)
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Roman Empire (a.d. 117)
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Rome, Ital. Roma, city (1991 pop. 2,775,250), capital of Italy and see of the pope, whose residence, Vatican City, is a sovereign state within the…
(Encyclopedia)
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Moon mission assembly
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Stages in a moon mission shown counterclockwise from launching on the first day to splashdown on the ninth day.
space exploration, the…
Biographies of U.S. representatives and senators from Pennsylvania Member Name Birth-Death ACHESON, Ernest Francis 1855-1917 ACKER, Ephraim Leister 1827-1903…
(Encyclopedia) science [Lat. scientia=knowledge]. For many the term science refers to the organized body of knowledge concerning the physical world, both animate and inanimate, but a proper…
