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Uruguay , river, South America

(Encyclopedia)Uruguay yo͝oˈrəgwā, gwī, Span. o͞oro͞ogwiˈ, o͞oro͞owīˈ [key], river, c.1,000 mi (1,610 km) long, rising in S Brazil and flowing in an arc W, SW, and S to the Río de la Plata, an estuary; ...

Bethlehem, town, South Africa

(Encyclopedia)Bethlehem, town, Free State prov., E central South Africa, part and seat of Dihlabeng local municipality. It is situated in a farming and livestock area and has industries producing furniture and food...

Balchen, Bernt

(Encyclopedia)Balchen, Bernt bârnt bälˈkən [key], 1899–1973, Norwegian-American aviator. He headed one of the search expeditions for Amundsen and Ellsworth in 1925 and was a member of their 1926 expedition to...

Henson, Matthew Alexander

(Encyclopedia)Henson, Matthew Alexander, 1866–1965, African-American arctic explorer, b. Charles County, Md. He accompanied Robert E. Peary as personal assistant, dog driver, and interpreter on numerous expeditio...

Gill, Sir David

(Encyclopedia)Gill, Sir David gĭl [key], 1843–1914, Scottish astronomer, educated at the Univ. of Aberdeen. He made observations of the transits of Venus and Mars and investigated the solar parallax. As astronom...

neutrino astronomy

(Encyclopedia)neutrino astronomy, study of stars by means of their emission of neutrinos, fundamental particles that result from nuclear reactions and are emitted by stars along with light. Approximately 100 billio...

Crux

(Encyclopedia)Crux kro͝oks [key] [Lat.,=cross], small but brilliant southern constellation whose four most prominent members form a Latin cross, the famous Southern Cross. The long arm of the cross, terminating in...

Mawson, Sir Douglas

(Encyclopedia)Mawson, Sir Douglas, 1882–1958, Australian antarctic explorer and geologist, b. England. His first geographical expedition was to the New Hebrides Islands as a geologist in 1903. As a member of the ...

Simnel, Lambert

(Encyclopedia)Simnel, Lambert sĭmˈnəl [key], c.1475–1525, imposter and pretender to the English throne. Little is known of his early life, but before 1486 he caught the attention of an Oxford priest, Richard S...

Cook, Frederick Albert

(Encyclopedia)Cook, Frederick Albert, 1865–1940, American explorer and physician, b. Sullivan co., N.Y. Cook early became interested in the arctic and accompanied the expedition of Robert E. Peary in 1891–92 as...