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earth, in geology and astronomy

(Encyclopedia)CE5 A. Cross section of the earth, showing its shells B. Detailed cross section of the crust and upper mantle: The lithosphere consists of the hard rock in the crust and upper mantle, lying above t...

Benin, city and former kingdom, Nigeria

(Encyclopedia)Benin bĕnēnˈ [key], city, S Nigeria, a port on the Benin River. Palm nuts and timber are p...

Cobb, Ty

(Encyclopedia)Cobb, Ty (Tyrus Raymond Cobb), 1886–1961, American baseball player, b. Narrows, Ga. In 1905 he joined the Detroit Tigers as center fielder and in his 24 years in the American League was one of the m...

Speaker, Tris

(Encyclopedia)Speaker, Tris (Tristram Speaker), 1888–1958, American baseball player, b. Hubbard, Tex. He started (1906) in organized baseball as a left-handed pitcher for the Cleburne team of the North Texas Leag...

church and state

(Encyclopedia)church and state, the relationship between the religion or religions of a nation and the civil government of that nation, especially the relationship between the Christian church and various civil gov...

particle detector

(Encyclopedia)CE5 Particle detector—Bubble chamber: A. Pressure drops as piston is raised; B. Charged particles passing through chamber ionize atoms in liquid; C. Bubbles form around atoms and form visible tra...

Sancho IV, Spanish king of Castile and León

(Encyclopedia)Sancho IV (Sancho the Brave) sänˈchō [key], 1257?-1295, Spanish king of Castile and León (1284–95), son and successor of Alfonso X. On the death (1275) of his elder brother, Ferdinand de la Cerd...

National Aeronautics and Space Administration

(Encyclopedia)National Aeronautics and Space Administration (NASA), civilian agency of the U.S. federal government with the mission of conducting research and developing operational programs in the areas of space e...

Szewińska, Irena

(Encyclopedia)Szewińska, Irena, 1946–2018, Polish sprinter and long jumper, b. Leningrad (now St. Petersburg, Russia) as Irena Kirszenstein, grad. Univ. of Warsaw, 1970. In her first Olympics (1964), she won sil...

Littleton

(Encyclopedia)Littleton, city (1990 pop. 33,685), seat of Arapahoe co., N central Colo.; platted 1812, inc. 1890. It is a suburb south of Denver in an irrigated farm area. Its manufactures include construction mate...