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radar astronomy

(Encyclopedia)radar astronomy, application of radar to the determination of distances and planetary features within the solar system, such as rotation rates. A short burst of radio waves is transmitted in the direc...

Le Nôtre, André

(Encyclopedia)Le Nôtre, André äNdrāˈ lənōˈtrə [key], 1613–1700, the most famous landscape architect in French history, b. near the Tuileries; studied drawing with Simon Vouet at the Louvre. Le Nôtre's f...

octopus

(Encyclopedia)octopus, cephalopod mollusk having no shell, eight muscular arms or tentacles, a pouch-shaped body, and two large, highly developed eyes. The prey (crabs, lobsters, and other shellfish) is seized by t...

Matthiessen, Peter

(Encyclopedia)Matthiessen, Peter măthˈəsən [key], American writer, naturalist, and adventurer, b. New York City, grad. Yale (1950). A founder (1951) of the literary Paris Review, he published his first novel, R...

Île-de-France, region, France

(Encyclopedia)Île-de-France ēl-də-fräNs [key], region and former province, N central France, in the center of the Paris basin, a fertile depression where the Marne and Ouse rivers join the Seine. Containing par...

Crazy Horse

(Encyclopedia)Crazy Horse, d. 1877, war chief of the Oglala Sioux. He was a prominent leader in the Sioux resistance to white encroachment in the mineral-rich Black Hills. When Crazy Horse and his people refused to...

Petraeus, David Howell

(Encyclopedia)Petraeus, David Howell pĕtrāˈəs [key], 1952–, American military officer and government official, b. Cornwall, N.Y., studied West Point (B.S., 1974), U.S. Army Command and General Staff College (...

Bhopal

(Encyclopedia)Bhopal bōˈpäl [key], former principality, Madhya Pradesh state, central India. A region of rolling downs and thickly forested hills, it is predominantly agricultural. Its Buddhist monuments include...

supernova

(Encyclopedia)supernova, a massive star in the latter stages of stellar evolution that suddenly contracts and then explodes, increasing its energy output as much as a billionfold. Supernovas are the principal distr...

cuttlefish

(Encyclopedia)cuttlefish, common name applied to cephalopod mollusks that have 10 tentacles, or arms, 8 of which have muscular suction cups on their inner surface and 2 that are longer and can shoot out for graspin...