Columbia Encyclopedia

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astronomy

(Encyclopedia)astronomy, branch of science that studies the motions and natures of celestial bodies, such as planets, stars, and galaxies; more generally, the study of matter and energy in the universe at large. ...

Palestine, region, Asia

(Encyclopedia)Palestine pălˈəstīn [key], historic region on the eastern shore of the Mediterranean Sea, at various times comprising parts of modern Israel, the West Bank and Gaza (recognized internationally by ...

novel

(Encyclopedia)novel, in modern literary usage, a sustained work of prose fiction a volume or more in length. It is distinguished from the short story and the fictional sketch, which are necessarily brief. Although ...

mathematics

(Encyclopedia)mathematics, deductive study of numbers, geometry, and various abstract constructs, or structures; the latter often “abstract” the features common to several models derived from the empirical, or ...

Turkey , country, Asia and Europe

(Encyclopedia)CE5 Turkey, Turk. Türkiye türˌkēyĕˈ [key], officially Republic of Turkey, republic (2015 est. pop. 78,271,000), 301,380 sq mi (780,574 sq km), SW Asia and SE Europe. It borders on Iraq (SE), ...

computer

(Encyclopedia)CE5 Schematic diagram of a computer system: Data flow is indicated by solid lines; control signals are indicated by dashed lines. computer, device capable of performing a series of arithmetic or l...

Civil War, in U.S. history

(Encyclopedia)Civil War, in U.S. history, conflict (1861–65) between the Northern states (the Union) and the Southern states that seceded from the Union and formed the Confederacy. It is generally known in the So...

United Nations

(Encyclopedia)CE5 CE5 United Nations (UN), international organization established immediately after World War II. It replaced the League of Nations. In 1945, when the UN was founded, there were 51 members; 193...

Canada

(Encyclopedia)CE5 CE5 Canada kănˈədə [key], independent nation (2020 est. pop. 37,742,154), 3,851,787 sq mi ...

Greece

(Encyclopedia)CE5 Greece, Gr. Hellas or Ellas, officially Hellenic Republic, republic (2015 est. pop. 11,218,000), 50,944 sq mi (131,945 sq km), SE Europe. It occupies the southernmost part of the Balkan Peninsu...