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blue shift

(Encyclopedia)blue shift or blueshift, in astronomy, the systematic displacement of individual lines in the spectrum of a celestial object toward the blue, or shorter wavelength, end of the visible spectrum. The am...

Artemis

(Encyclopedia)Artemis ärˈtəmĭs [key], in Greek religion and mythology, Olympian goddess, daughter of Zeus and Leto and twin sister of Apollo. Artemis' early worship, especially at Ephesus, identified her as an ...

Golden Age

(Encyclopedia)Golden Age, in classical mythology: see mythology. ...

Pisces

(Encyclopedia)Pisces pīˈsēz [key] [Lat.,=the fishes], constellation lying directly S of Andromeda and on the ecliptic (the sun's apparent path through the heavens) between Aries and Aquarius; it is one of the co...

Hades

(Encyclopedia)Hades hāˈdēz [key], in Greek and Roman religion and mythology. 1 The ruler of the underworld: see Pluto. 2 The world of the dead, ruled by Pluto and Persephone, located either underground or in the...

Poseidon

(Encyclopedia)Poseidon pōsīˈdən [key], in Greek religion and mythology, god of the sea, protector of all waters. After the fall of the Titans, Poseidon was allotted the sea. He was worshiped especially in conne...

peri

(Encyclopedia)peri pērˈē [key], in Persian mythology, supernatural being. Peris were said to be fallen angels who were denied paradise until they did penance. Originally agents of evil, in later mythology they w...

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...

Timotheus , Greek poet and musician

(Encyclopedia)Timotheus tĭmōˈthēəs [key], c.450–c.357 b.c., Greek poet and musician of Miletus. An innovator in music, he added a string to the kithara. Fragments of his dithyrambs and nomes remain. Euripide...

Autolycus, Greek astronomer and mathematician

(Encyclopedia)Autolycus ôtŏlˈĭkəs [key], fl. 4th cent. b.c., astronomer and mathematician of Pitane in Aeolis. Of his two extant works, that on the revolving sphere is said to be the oldest completely preserve...