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Baalbek
(Encyclopedia)Baalbek bälˈbĕk [key], ancient city, now in Lebanon, 35 mi (56 km) NW of Damascus, in the Al Biqa (Bekaa) valley. Originally it was probably devoted to the worship of Baal or Bel, the Phoenician su...Cousteau, Jacques Yves
(Encyclopedia)Cousteau, Jacques Yves zhäk ēv ko͞ostōˈ [key], 1910–97, French oceanographer and naval officer. In 1943, with Émil Gagnan, he invented the self-contained underwater breathing apparatus (scuba)...tide
(Encyclopedia)tide, alternate and regular rise and fall of sea level in oceans and other large bodies of water. These changes are caused by the gravitational attraction of the moon and, to a lesser extent, of the s...Struve
(Encyclopedia)Struve shtro͞oˈvə [key], family of astronomers. Friedrich Georg Wilhelm von Struve, 1793–1864, was born in Germany but later lived in Russia. While director (1817–39) of Dorpat Observatory he w...International Geophysical Year
(Encyclopedia)International Geophysical Year (IGY), 18-month period from July, 1957, through Dec., 1958, during a period of maximum sunspot activity, designated for cooperative study of the solar-terrestrial enviro...sundial
(Encyclopedia)sundial, instrument that indicates the time of day by the shadow, cast on a surface marked to show hours or fractions of hours, of an object on which the sun's rays fall. Although any object whose sha...Sol, in Roman religion
(Encyclopedia)Sol sŏl [key], in Roman religion, sun god. An ancient god of Mesopotamian origin, he was introduced (c.220) into Roman religion as Sol Invictus by emperor Heliogabalus. His worship remained an import...Shamash
(Encyclopedia)Shamash shäˈmäsh [key], sun god of Semitic origin, worshiped in Babylonia and Assyria. He was one of the great deities of ancient Middle Eastern religions, god of law, order, and justice. The chief...Arcturus
(Encyclopedia)Arcturus ärkto͝orˈəs [key], brightest star in the constellation Boötes and 4th-brightest star in the entire sky; Bayer designation Alpha Boötis; 1992 position R.A. 14h15.3m, Dec. +19°13′. An ...Trojan asteroids
(Encyclopedia)Trojan asteroids, asteroids that revolve about the sun in the same orbit as a planet, occupying stable positions (known as Lagrangian points) either about 60° ahead of the planet in the orbit or abou...Browse by Subject
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