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Who, The

(Encyclopedia) Who, The, English rock music group formed in 1964. The members were Peter Dennis Blanford Townshend, 1945–, Chiswick, London, U.K…

Dysnomia

(Encyclopedia) Dysnomia, in astronomy, the moon, or natural satellite, of Eris.

Phoebe, in Greek mythology

(Encyclopedia) Phoebe, in Greek mythology, a Titan. She was the mother of Leto and Asteria and the grandmother of Artemis. In some legends she was identified with Artemis as the goddess of the moon.

Pickering, William Henry

(Encyclopedia) Pickering, William Henry, 1858–1938, American astronomer, b. Boston, grad. Massachusetts Institute of Technology (B.S., 1879). He taught at the Massachusetts Institute of Technology (…

escape velocity

(Encyclopedia) escape velocity, the velocity a body must be given in order to escape the gravitational hold of some other larger body, e.g., the earth, moon, or sun. A body given less than the escape…

Craters of the Moon National Monument and Preserve

(Encyclopedia) Craters of the Moon National Monument and Preserve, S central Idaho; est. 1924. The monument (53,438 acres/21,625 hectares) lies at the north end of the much larger preserve (698,940…

Brown, Margaret Wise

(Encyclopedia) Brown, Margaret Wise, 1910–52, American children's book author, b. Brooklyn, N.Y., B.A Hollins College, 1932. Continuing her education at the Bureau of Educational Experiments (now the…

mineral

(Encyclopedia) mineral, inorganic substance occurring in nature, having a characteristic and homogeneous chemical composition, definite physical properties, and, usually, a definite crystalline form…

Ban Ki-Moon

(Encyclopedia) Ban Ki-MoonBan Ki-Moonbän gē-m&oomacr;n [key], 1944–, South Korean diplomat, secretary-general of the United Nations (2007–16), b. Chungju, grad. Seoul National Univ. (B.S., 1970…

cycle

(Encyclopedia) cycle, in astronomy, period of time required for the recurrence of some celestial event. The length of a cycle may be measured relative to the sun or to the fixed stars (see sidereal…