astronomy
(Encyclopedia) astronomy, branch of science that studies the motions and natures of celestial bodies, such as planets, stars, and galaxies; more generally, the study of matter and energy in the universe at large.
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slavery
(Encyclopedia) slavery, historicially, an institution based on a relationship of dominance and submission, whereby one person owns another and can exact from that person labor or other services. Slavery has been fou...
Virginia, state, United States
(Encyclopedia)
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Virginia, state of the S Middle-Atlantic United States. It is bordered by the Atlantic Ocean (E), North Carolina and Tennessee (S), Kentucky and West Virginia (W), and Maryland and the District...
Nobel Prizes (table)
(Encyclopedia) Nobel Prizes
United States
(Encyclopedia)
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United States, officially United States of America, republic (2015 est. pop. 319,929,000), 3,539,227 sq mi (9,166,598 sq km), North America. The United States is the world's third l...
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