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Kuhn, Thomas Samuel
(Encyclopedia)Kuhn, Thomas Samuel, 1922–96, American philosopher and historian of science, b. Cincinnati, Ohio. He trained as a physicist at Harvard (Ph.D. 1949), where he taught the history of science from 1948 ...Galileo
(Encyclopedia)Galileo (Galileo Galilei) gălˌĭlēˈō; gälēlĕˈō gälēlĕˈē [key], 1564–1642, great Italian astronomer, mathematician, and physicist. By his persistent investigation of natural laws he la...Major Planets of the Solar System (table)
(Encyclopedia)Major Planets of the Solar System ...Clavius, Cristoph
(Encyclopedia)Clavius, Cristoph krĭsˈtôf klāˈvēəs [key], 1537–1612, German astronomer and mathematician. He entered the Jesuit order in 1555 and studied at Coimbra and Rome. He taught mathematics at the Co...Urban VIII
(Encyclopedia)Urban VIII, 1568–1644, pope (1623–44), a Florentine named Maffeo Barberini; successor of Gregory XV. Throughout his pontificate the Thirty Years War raged in Germany. For various political reasons...planetarium
(Encyclopedia)planetarium, optical device used to project a representation of the heavens onto a domed ceiling; the term also designates the building that houses such a device. A modern planetarium consists of as m...planet
(Encyclopedia)planet [Gr.,=wanderer], a large nonluminous body of rock, gas, or ice that orbits the sun or another star, has a rounded shape due to gravity, and has cleared its orbit of smaller objects. The term, o...Kepler, Johannes
(Encyclopedia)Kepler, Johannes yōhäˈnəs kĕpˈlər [key], 1571–1630, German astronomer. From his student days at the Univ. of Tübingen, he was influenced by the Copernican teachings. From 1593 to 1598 he was...Kepler's laws
(Encyclopedia)CE5 Schematic representation of Kepler's second law: The areas ABF and A′B′F′ are equal and are swept out in equal intervals of time by a planet orbiting around the sun (at F). Kepler's laws...astrology
(Encyclopedia)astrology, form of divination based on the theory that the movements of the celestial bodies—the stars, the planets, the sun, and the moon—influence human affairs and determine the course of event...Browse by Subject
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