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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…

Sansovino, Jacopo

(Encyclopedia) Sansovino, JacopoSansovino, Jacopoyäˈkōpō [key]Sansovino, Jacopo sänsōvēˈnō [key], 1486–1570, Italian sculptor and architect of the Renaissance. His surname was taken in place of his…

Grandin, Temple

(Encyclopedia) Grandin, Temple, 1947–, American animal scientist and industrial designer, b. Boston, grad. Franklin Pierce College (B.A., 1970), Arizona State Univ. (M.S., 1975), Univ. of Illinois (…

Kepler, Johannes

(Encyclopedia) Kepler, JohannesKepler, Johannesyōhäˈnəs kĕpˈlər [key], 1571–1630, German astronomer. From his student days at the Univ. of Tübingen, he was influenced by the Copernican teachings.…

Sedna

(Encyclopedia) Sedna, in astronomy, the most distant known large object in the solar system. With a highly eccentric elliptical orbit that ranges from an estimated 76 AU to 937 AU, Sedna also has an…

De Palma, Brian

(Encyclopedia) De Palma, Brian, 1940–, American film director, b. Newark, N.J. Heavily influenced by Alfred Hitchcock, he is especially known for bloody, shocking, and suspenseful thrillers.…

Sirius

(Encyclopedia) SiriusSiriussĭrˈēəs [key], or Dog Star, brightest star in the sky. It is located in the constellation Canis Major (1992 position R.A. 6h44.8m, Dec. −16°42′); its Bayer designation is…

Sagan, Carl Edward

(Encyclopedia) Sagan, Carl EdwardSagan, Carl Edwardsāˈgən [key], 1934–96, American astronomer and popularizer of science, b. New York City. Early in his career he investigated radio emissions from…

Romulus

(Encyclopedia) RomulusRomulusrŏmˈy&oomacr;ləs [key], in Roman legend, founder of Rome. When Amulius usurped the throne of his brother Numitor, king of Alba Longa, he forced Numitor's daughter,…