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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...Challenger
(Encyclopedia)Challenger, U.S. space shuttle. It exploded (Jan. 28, 1986) 73 seconds into its tenth flight, killing all seven crew members, including the first civilian in space, schoolteacher Christa McAuliffe. Th...Thomson, Sir Charles Wyville
(Encyclopedia)Thomson, Sir Charles Wyville, 1830–82, Scottish naturalist, noted as a marine biologist and deep-sea explorer. He participated in three deep-sea dredging expeditions (1868–70) and obtained evidenc...Ride, Sally Kristen
(Encyclopedia)Ride, Sally Kristen 1951–2012, American astrophysicist and astronaut, b. Encino, Calif. With an M.A. in physics (1975) and a Ph.D. in astrophysics from Stanford Univ., she joined NASA in 1978, where...Topalov, Veselin
(Encyclopedia)Topalov, Veselin, 1975–, Bulgarian chess player. Topalov won the under-14 world championship in 1989 and placed second in the under-16 the following year, becoming a grandmaster in 1992 and a potent...Mariana Trench
(Encyclopedia)Mariana Trench or Marianas Trench, mârˌēănˈəz [key], elongated depression on the Pacific Ocean floor, 210 mi (338 km) SW of Guam. It is the deepest known depression on the earth's surface, havin...Edwards Air Force Base
(Encyclopedia)Edwards Air Force Base, U.S. military installation, 301,000 acres (121,805 hectares), S Calif., NE of Lancaster; est. 1933. It is one of the largest air force bases in the United States and has the wo...Rogers, William Pierce
(Encyclopedia)Rogers, William Pierce, 1913–2001, U.S. government official, b. Norfolk, N.Y. Admitted to the bar in 1937, he served (1947–50) as chief counsel to two Senate investigating committees before becomi...MacCready, Paul Beattie
(Encyclopedia)MacCready, Paul Beattie, 1925–2007, American engineer and inventor known for his achievements in human-powered flight, b. New Haven, Conn., Ph.D. California Institute of Technology, 1952. In 1997 he...Browse by Subject
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