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Perseus, in Greek mythology

(Encyclopedia)Perseus pûrˈsēəs, –so͝os [key], in Greek mythology, son of Zeus and Danaë. His grandfather, Acrisius, had been warned by an oracle that his grandson would kill him and therefore put Perseus an...

Orestes, in Greek mythology

(Encyclopedia)Orestes, in Greek mythology, the only son of Clytemnestra and Agamemnon and brother of Electra and Iphigenia. After the slaying of Agamemnon by Clytemnestra and Aegisthus, Orestes, still a boy, was se...

Burnham, Sherburne Wesley

(Encyclopedia)Burnham, Sherburne Wesley, 1838–1921, American astronomer, b. Thetford, Vt. After serving as observer at Dearborn Observatory, Chicago (1877–81, 1882–84), and as astronomer at Lick Observatory (...

tyrant

(Encyclopedia)tyrant, in ancient history, ruler who gained power by usurping the legal authority. The word is perhaps of Lydian origin and carried with it no connotation of moral censure. With the growth of the con...

Barnard, Edward Emerson

(Encyclopedia)Barnard, Edward Emerson, 1857–1923, American astronomer, b. Nashville, Tenn., grad. Vanderbilt Univ., 1887. From 1887 to 1895 he was astronomer at Lick Observatory in California, and from 1895 he wa...

Aristarchus of Samos

(Encyclopedia)Aristarchus of Samos ărˌĭstärˈkəs, sāˈmŏs [key], fl. c.310 b.c.–c.230 b.c., Greek astronomer and mathematician of the Alexandrian school. He is said to have been the first to propose a heli...

Airy, Sir George Biddell

(Encyclopedia)Airy, Sir George Biddell, 1801–92, English astronomer. The son of a poor farmer, he distinguished himself as Senior Wrangler at Cambridge, where he was elected fellow of Trinity College (1824) and a...

Bradley, James

(Encyclopedia)Bradley, James, 1693–1762, English astronomer. His discovery of the aberration of light, announced in 1728, provided an important line of evidence for the motion of the earth around the sun. In 1742...

Flamsteed, John

(Encyclopedia)Flamsteed, John flămˈstēd [key], 1646–1719, English astronomer. He was appointed (1675) astronomer royal by King Charles II and carried on his researches at Greenwich Observatory. Over his protes...

Aratus, Greek statesman and general

(Encyclopedia)Aratus, d. 213 b.c., Greek statesman and general of Sicyon, prime mover and principal leader of the Second Achaean League. His objective at first was to free the Peloponnesus from Macedonian dominatio...