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Ferris wheel

(Encyclopedia)Ferris wheel, amusement park ride. It consists of a power-operated wheel that is about 50 ft (15 m) in diameter. It has two rims that are parallel to and equidistant from the shaft about which the whe...

Noah, Mordecai Manuel

(Encyclopedia)Noah, Mordecai Manuel , nōˈə [key], 1785–1851, American journalist and politician, b. Philadelphia. He became a journalist in Charleston, S.C., and gave ardent support to the War of 1812. As a sp...

‘Oumuamua

(Encyclopedia)‘Oumuamua ōmo͞oˈəmo͞oˈə [key], officially 1I/2017 U1 (‘Oumuamua), interstellar object, the first to be discovered in the solar system. Highly variable in brightness, it also is highly and u...

Peebles, Phillip James Edwin

(Encyclopedia)Peebles, Phillip James Edwin, 1935–, Canadian-American astrophysicist and cosmologist, b. Winnipeg, Man., Ph.D. Princeton, 1962. He spent his entire career as a researcher at Princeton, becoming a f...

McGraw, John Joseph

(Encyclopedia)McGraw, John Joseph məgrôˈ [key], 1873–1934, American baseball manager, b. Cortland co., N.Y. He began playing professional baseball in 1890 and was (1891–1900) the star third baseman of the re...

Lemieux, Mario

(Encyclopedia)Lemieux, Mario ləmyöˈ [key], 1965–, Canadian ice hockey player, b. Montreal. A star for the Pittsburgh Penguins, he was the team's first pick in the 1984 National Hockey League (NHL) draft and wa...

Lang Lang

(Encyclopedia)Lang Lang, 1982–, Chinese virtuoso pianist. A child prodigy, he studied at the Central Music Conservatory, Beijing, and the Curtis Institute, Philadelphia. Noted for the romantic, emotive nature of ...

photosphere

(Encyclopedia)photosphere, luminous, apparently opaque layer of gases that forms the visible surface of the sun or any other star. The photosphere lies between the dense interior gases and the more attenuated gases...

celestial pole

(Encyclopedia)celestial pole, one of the two points at which the earth's axis of rotation intersects the celestial sphere. The celestial pole is important as a reference point in the equatorial coordinate system; t...

Cancer, in astronomy

(Encyclopedia)Cancer [Lat.,=the crab], in astronomy, constellation lying on the ecliptic (the sun's apparent path through the heavens) between Gemini and Leo; it is a constellation of the zodiac. It contains the st...