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Saturn, in Roman religion and mythology

(Encyclopedia)Saturn, in Roman religion and mythology, god of harvests, later identified with the Greek Kronos. Little is known of the origins of his cult. His reign was regarded as the Golden Age. He was the husba...

Cassini

(Encyclopedia)Cassini käs-sēˈnē [key], name of a family of Italian-French astronomers, four generations of whom were directors of the Paris Observatory. Gian Domenico Cassini, 1625–1712, was born in Italy and...

Lemonnier, Pierre Charles

(Encyclopedia)Lemonnier, Pierre Charles pyĕr shärl ləmônyāˈ [key], 1715–99, French astronomer. For many years he was professor of physics at the Collège de France. He studied the moon and the influence of ...

Stratospheric Observatory for Infrared Astronomy

(Encyclopedia)Stratospheric Observatory for Infrared Astronomy: see infrared astronomy. ...

space probe

(Encyclopedia)space probe, space vehicle carrying sophisticated instrumentation but no crew, designed to explore various aspects of the solar system (see space exploration). Unlike an artificial satellite, which is...

Thor

(Encyclopedia)Thor dōˈnär [key], Norse god of thunder. An ancient and highly revered divinity, Thor was the patron and protector of peasants and warriors. As a god of might and war he was represented as extremel...

Trojan asteroids

(Encyclopedia)Trojan asteroids, asteroids that revolve about the sun in the same orbit as a planet, occupying stable positions (known as Lagrangian points) either about 60° ahead of the planet in the orbit or abou...

Quirinus

(Encyclopedia)Quirinus kwĭrˈĭnəs [key], in Roman religion, an early god, possibly of war. Worshiped originally by the Sabines, he was one of the chief gods of ancient Rome, associated with Jupiter and Mars. In ...

Low, Frank James

(Encyclopedia)Low, Frank James, 1933–2009, American astronomer and physicist, b. Mobile, Ala., grad. Yale (B.S. 1955), Rice Univ. (M.A. 1957, Ph.D 1959). Low, who worked at Texas Instruments and the National Radi...

transit

(Encyclopedia)transit, in astronomy, passage of a body across a meridian or passage of a small body across the visible disk of a larger one. (The passage of a large body across a smaller one is called an eclipse or...