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Titan , in astronomy

(Encyclopedia)Titan tīˈtən [key], in astronomy, the largest of the named moons, or natural satellites, of Saturn. Also known as Saturn VI (or S6), Titan is 3,200 mi (5,150 km) in diameter, orbits Saturn at a mea...

Fort Polk

(Encyclopedia)Fort Polk, U.S. army post, 200,000 acres (80,937 hectares), SW La.; est. 1941 and named for the Rev. Leonidas Polk. It is a major army warm-weather training center. ...

McLean

(Encyclopedia)McLean, city (1990 pop. 38,168), Fairfax co., N Va., a suburb of Washington, D.C. Manufacturing includes foods, satellite components, and computer and telecommunications equipment. The headquarters of...

Phobos

(Encyclopedia)Phobos fōˈbŏs [key], in astronomy, innermost moon, or natural satellite, of Mars. ...

wind shear

(Encyclopedia)wind shear, a sudden, drastic change in wind direction or speed over a comparatively short distance. Most winds travel horizontally, as does most wind shear, but under certain conditions, including th...

Richardson, Lewis Fry

(Encyclopedia)Richardson, Lewis Fry, 1881–1953, British physicist and pioneering meteorologist, grad. Cambridge (1903), Univ. of London (B.Sc. 1929). Richardson worked at the National Physical Laboratory (1902–...

Lizard, The

(Encyclopedia)Lizard, The, peninsula, Cornwall, SW England. Its southern extremity (the southernmost point of Great Britain) is called Lizard Point or Lizard Head. The coast has colored serpentine rocks, small cove...

degree-day

(Encyclopedia)degree-day, a unit of measure used to estimate the fuel and power requirements in heating and cooling a building; it is equal to a difference of 1 degree between the outdoor daily average temperature ...

European Space Agency

(Encyclopedia)European Space Agency (ESA), multinational agency dedicated to the promotion, for exclusively peaceful purposes, of cooperation among European states in space research and technology. Member states in...

Carpentersville

(Encyclopedia)Carpentersville, village (2020 pop. 36,494), Kane co., NE Ill., on the Fox River, settled 1834, platted 1851, inc. 1887. In a traditionally agricultural...