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space exploration
(Encyclopedia) CE5 Moon mission assembly CE5 Stages in a moon mission shown counterclockwise from launching on the first day to splashdown on the ninth day. space exploration, the investigation of physical co...Van Allen, James Alfred
(Encyclopedia)Van Allen, James Alfred, 1914–2006, American physicist and space scientist, Mt. Pleasant, Iowa. A graduate (Ph.D 1939) of and professor of physics (1951–85) at what is now the Univ. of Iowa, where...Leguía, Augusto Bernardino
(Encyclopedia)Leguía, Augusto Bernardino ougo͞osˈtō bārnärdēˈnō lāgēˈä [key], 1863–1932, president of Peru (1908–12, 1919–30). In his second administration Leguía promulgated a new constitution ...Europa, in astronomy
(Encyclopedia)Europa yo͝orōˈpə [key], in astronomy, one of the 39 known moons, or natural satellites, of Jupiter. Magnetic-field data collected by the space probe Galileo in 2002 strongly indicated a liquid-wat...dimension, in mathematics
(Encyclopedia)dimension, in mathematics, number of parameters or coordinates required locally to describe points in a mathematical object (usually geometric in character). For example, the space we inhabit is three...United Nations Relief and Rehabilitation Administration
(Encyclopedia)United Nations Relief and Rehabilitation Administration (UNRRA), organization founded (1943) during World War II to give aid to areas liberated from the Axis powers. There were finally 52 participatin...Barrientos Ortuño, René
(Encyclopedia)Barrientos Ortuño, René rānāˈ bär-ryānˈtōs ōrto͞oˈnyō [key], 1919–69, Bolivian political leader. Commander of the Bolivian air force, he supported the National Revolutionary Movement (M...Stephen, Saint, duke and king of Hungary
(Encyclopedia)Stephen, Saint, or Stephen I, 975–1038, duke (997–1001) and first king (1001–38) of Hungary, called the Apostle of Hungary. The Hungarian state may be said to date from his reign. Because he con...Strategic Defense Initiative
(Encyclopedia)Strategic Defense Initiative (SDI), former U.S. government program responsible for research and development of a space-based system to defend the nation from attack by strategic ballistic missiles (se...Vandenberg Air Force Base
(Encyclopedia)Vandenberg Air Force Base, U.S. military installation, 3,456 acres (1,399 hectares), SW Calif., near Lompoc; chief Pacific coast launch site for military satellites, and headquarters of the U.S. Space...Browse by Subject
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