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Leo, in astronomy
(Encyclopedia)Leo [Lat.,=the lion], northern constellation lying S of Ursa Major and on the ecliptic (apparent path of the sun through the heavens) between Cancer and Virgo; it is one of the constellations of the z...comet
(Encyclopedia)CE5 Comet: Whatever the direction of a comet's flight, its “tail” always points away from the sun. The tail disappears when the comet is far from the sun. comet [Gr.,=longhaired], a small cele...Alvarez, Luis Walter
(Encyclopedia)Alvarez, Luis Walter, 1911–88, American physicist, b. San Francisco, grad. Univ. of Chicago, 1932, Ph.D. 1936. He was awarded the 1968 Nobel Prize in Physics for his discovery of a large number of r...fuzzy logic
(Encyclopedia)fuzzy logic, a multivalued (as opposed to binary) logic developed to deal with imprecise or vague data. Classical logic holds that everything can be expressed in binary terms: 0 or 1, black or white, ...Taylor, James Vernon
(Encyclopedia) Taylor, James Vernon, 1948-, American singer-songwriter, b. Boston, Ma. Taylor was born in Boston but raised in Chapel Hill, N.C. As a teenager, he be...Čapek, Karel
(Encyclopedia)Čapek, Karel chäˈpĕk [key] 1890–1938, Czech playwright, novelist, and essayist. He is best known as the author of two brilliant satirical plays—R. U. R. (Rossum's Universal Robots, 1921, tr. ...Theresa, Saint (Theresa of Lisieux)
(Encyclopedia)Theresa or Thérèse, Saint (Theresa of Lisieux), 1873–97, French Carmelite nun, one of the most widely loved saints of the Roman Catholic Church, b. Alençon. Her original name was Marie-Françoise...rainbow
(Encyclopedia)rainbow, arc showing the colors of the spectrum, violet inside and red outside, which appears when the sun shines through water droplets. It often appears while the sun is shining after a brief thunde...planetary system
(Encyclopedia)planetary system, a star and all the celestial bodies bound to it by gravity, especially planets and their natural satellites. Until the last decade of the 20th cent., the only planetary system known ...crater
(Encyclopedia)crater, circular, bowl-shaped depression on the earth's surface. (For a discussion of lunar craters, see moon.) Simple craters are bowl-shaped with a raised outer rim. Complex craters have a raised ce...Browse by Subject
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