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Prometheus, in astronomy

(Encyclopedia)Prometheus prōmēˈthēəs [key], in astronomy, one of the named moons, or natural satellites, of Saturn. Also known as Saturn XVI (or S16), Prometheus is an irregularly shaped (nonspherical) body me...

Oklahoma City

(Encyclopedia)Oklahoma City (1990 pop. 444,719), state capital, and seat of Oklahoma co., central Okla., on the North Canadian River; inc. 1890. The state's largest city, it is an important livestock market, a whol...

Isozaki, Arata

(Encyclopedia)Isozaki, Arata äräˈtä ēˌsōzäˈkē [key], 1931–, Japanese architect, b. Oita. One of his nation's most important contemporary architects, he has an international reputation and has designed n...

Wilmut, Sir Ian

(Encyclopedia)Wilmut, Sir Ian, 1944– British embryologist, b. Warwickshire, England, Ph.D. Cambridge, 1971. While doing postdoctoral research at Cambridge, he was part of the team that produced Frostie, the first...

meitnerium

(Encyclopedia)meitnerium mītnĭrˈēəm [key], artificially produced radioactive chemical element; symbol Mt; at. no. 109; mass number of most stable isotope 276; m.p., b.p., sp. gr., and valence unknown. Situated...

Astaire, Fred

(Encyclopedia)Astaire, Fred əstârˈ [key], 1899–1987, American dancer, actor, and singer, b. Omaha, Nebr., as Frederick Austerlitz. After 1911 he and his sister Adele (1896–1981), b. Adele Marie Austerlitz, f...

Masada

(Encyclopedia)Masada məsāˈdə [key], ancient mountaintop fortress in Israel, the final outpost of the Zealot Jews in their rebellion against Roman authority (a.d. 66–73). Located in the Judaean Desert, the for...

rowing

(Encyclopedia)rowing, the art of propelling a boat by means of oars operated by hand. Boats propelled by oars (e.g., the galley) were used in ancient times for both war and commerce. Rowing is now generally used on...

Sacramento, city, United States

(Encyclopedia)Sacramento săkrəmĕnˈtō [key], city (1990 pop. 369,365), state capital and seat of Sacramento co., central Calif., on the Sacramento River at its confluence with the American River; settled 1839, ...

Challenger expedition

(Encyclopedia)Challenger expedition, British oceanographic expedition under the direction of the Scottish professor Charles Wyville Thompson and the British naturalist Sir John Murray. Taking place from 1872 to 187...