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sun, in astronomy

(Encyclopedia)CE5 Structure of the sun sun, intensely hot, self-luminous body of gases at the center of the solar system. Its gravitational attraction maintains the planets, comets, and other bodies of the sola...

midnight sun

(Encyclopedia)midnight sun, phenomenon in which the sun remains visible in the sky continuously for 24 hr or longer, occurring only in the polar regions. The midnight sun is due to the fact that the plane of the ea...

sun god

(Encyclopedia)sun god: see sun worship.

sun grebe

(Encyclopedia)sun grebe, common name for a tropical, mainly aquatic bird of the family Heliornithidae. Sun grebes, also called finfoots, are remarkable for their colorful, puffy-toed, webbed feet, which may serve a...

Sun Ra

(Encyclopedia) Sun Ra, 1914-1993, African-American jazz composer, bandleader, and keyboard player, b. Birmingham, Al., as Herman Poole Blount. Sun Ra was a leading c...

Sun Tzu

(Encyclopedia)Sun Tzu so͞on dzo͞o [key], fl. c.500–320. b.c., name used by the unknown Chinese authors of the sophisticated treatise on philosophy, logistics, espionage, and strategy and tactics known as The Ar...

Sun Valley

(Encyclopedia)Sun Valley, mountain resort city (1990 pop. 938), alt. c.6,000 ft (1,830 m), Blaine co., S central Idaho; inc. 1967. It is a popular year-round resort with both winter and summer sports. It was founde...

sun worship

(Encyclopedia)sun worship. Deification and adoration of the sun occurred primarily in agrarian societies. When man became a farmer, and thus dependent upon daily and seasonal changes of weather, he often turned to ...

Sun Belt

(Encyclopedia)Sun Belt or Sunbelt, southern tier of the United States, focused on Florida, Texas, Arizona, and California, and extending as far north as Virginia. The term gained wide use in the 1970s, when the eco...

sun dance

(Encyclopedia)sun dance, ceremony typical of the Plains Indians of North America. The ceremony was performed in the summer and lasted from two to eight days. Some of the ceremony was secret. Smoking, fasting, and o...

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