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Adhara
(Encyclopedia)Adhara ădhârˈə [key], bright star in the constellation Canis Major; Bayer designation ε Canis Majoris; 1992 position R.A. 6h58.3m, Dec. −31°54′. A bluish-white giant (spectral class B2 II) w...Adams, Samuel Hopkins
(Encyclopedia)Adams, Samuel Hopkins, 1871–1958, American author, b. Dunkirk, N.Y., grad. Hamilton College, 1891. He was a reporter for the New York Sun (1891–1900) and then joined McClure's Magazine, where he g...navigation
(Encyclopedia)navigation, science and technology of finding the position and directing the course of vessels and aircraft. The next great revolution in navigation occurred in the 20th cent., when radio signals ...spectral class
(Encyclopedia) CE5 spectral class, in astronomy, a classification of the stars by their spectrum and luminosity. In 1885, E. C. Pickering began the first extensive attempt to classify the stars spectroscopically....week
(Encyclopedia)week, period of time shorter than the month, commonly seven days. The ancient Egyptians used a 10-day period, as did the French under the short-lived French Revolutionary calendar. In many regions a f...supernova
(Encyclopedia)supernova, a massive star in the latter stages of stellar evolution that suddenly contracts and then explodes, increasing its energy output as much as a billionfold. Supernovas are the principal distr...time , sequential arrangement of all events
(Encyclopedia)time, sequential arrangement of all events, or the interval between two events in such a sequence. The concept of time may be discussed on several different levels: physical, psychological, philosophi...Mauldin, Bill
(Encyclopedia)Mauldin, Bill (William Henry Mauldin), 1921–2003, American cartoonist, b. Mountain Park, N.Mex. During World War II, in which he served as an infantryman-cartoonist in Italy, France, and Germany, Ma...Nome
(Encyclopedia)Nome nōm [key], city (1990 pop. 3,500), W Alaska, on the southern side of Seward Peninsula, on Norton Sound; founded c.1898, when gold was discovered on the beach there. It is the commercial, governm...Austerlitz
(Encyclopedia)Austerlitz ôˈstərlĭts, Ger. ouˈ– [key], Czech Slavkov u Brna, town, S Czech Republic, in Moravia. An agricultural center, the town has sugar refineries and cotton mills. It became a seat of the...Browse by Subject
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