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National Aeronautics and Space Administration

(Encyclopedia)National Aeronautics and Space Administration (NASA), civilian agency of the U.S. federal government with the mission of conducting research and developing operational programs in the areas of space e...

Delian League

(Encyclopedia)Delian League dēˈlēən [key], confederation of Greek city-states under the leadership of Athens. The name is used to designate two distinct periods of alliance, the first 478–404 b.c., the second...

Sophocles

(Encyclopedia)Sophocles sŏfˈəklēz [key], c.496 b.c.–406 b.c., Greek tragic dramatist, younger contemporary of Aeschylus and older contemporary of Euripides, b. Colonus, near Athens. A man of wealth, charm, an...

Bernini, Giovanni Lorenzo

(Encyclopedia)Bernini, Giovanni Lorenzo or Gianlorenzo jōvänˈnē lōrĕnˈtsō, jänlōrĕnˈtsō bĕrnēˈnē [key], 1598–1680, Italian sculptor and architect, b. Naples. He was the dominant figure of the Ita...

laurel, in botany

(Encyclopedia)CE5 Sassafras, Sassafras albidum, a member of the laurel family laurel, common name for the Lauraceae, a family of forest trees and shrubs found mainly in tropical SE Asia but also abundant in tro...

Trojan War

(Encyclopedia)Trojan War, in Greek mythology, war between the Greeks and the people of Troy. The strife began after the Trojan prince Paris abducted Helen, wife of Menelaus of Sparta. When Menelaus demanded her ret...

Greek religion

(Encyclopedia)Greek religion, religious beliefs and practices of the ancient inhabitants of the region of Greece. The civil strife that followed the classical period (from c.500 b.c.) placed the old gods on trial...

exobiology

(Encyclopedia)exobiology or astrobiology, search for extraterrestrial life within the solar system and throughout the universe. Philosophical speculation that there might be other worlds similar to ours dates back ...

basalt

(Encyclopedia)basalt bəsôltˈ, băsˈôlt [key], fine-grained rock of volcanic origin, dark gray, dark green, brown, reddish, or black in color. Basalt is an igneous rock, i.e., one that has congealed from a molt...

Tintoretto

(Encyclopedia)Tintoretto tēntōrĕtˈtō [key], 1518–94, Venetian painter, whose real name was Jacopo Robusti. Tintoretto is considered one of the greatest painters in the Venetian tradition. He was called Il Ti...