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Afghanistan

(Encyclopedia)CE5 Afghanistan ăfgănˈĭstănˌ, ăfgänˌĭstänˈ [key], officially Islamic Republic of Afghanistan, republic (2020 est. pop. 38,930,000), 249,999 sq mi (6...

Mercury, in astronomy

(Encyclopedia)Mercury, in astronomy, nearest planet to the sun, at a mean distance of 36 million mi (58 million km); its period of revolution is 88 days. Mercury passes through phases similar to those of the moon a...

Long Island, island, United States

(Encyclopedia)Long Island (1990 pop. 6,861,454), 1,723 sq mi (4,463 sq km), 118 mi (190 km) long, and from 12 to 20 mi (19–32 km) wide, SE N.Y.; fourth largest island of the United States and the largest outside ...

Hebron, city, West Bank

(Encyclopedia)Hebron, Arab. Al-Khalil, city (2003 est. pop. 155,000), the West Bank. Hebron is situated at an altitude of 3,000 ft (910 m) in a region where grapes, cereal grains, and vegetables are grown. Tanning,...

India-Pakistan Wars

(Encyclopedia)India-Pakistan Wars, name given to the series of conflicts between India and Pakistan since 1947, when the Indian subcontinent was partitioned and the two countries became independent of Great Britain...

Indo-European

(Encyclopedia)CE5 Indo-European, family of languages having more speakers than any other language family. It is estimated that approximately half the world's population speaks an Indo-European tongue as a first ...

Arab League

(Encyclopedia)Arab League, popular name for the League of Arab States, formed in 1945 in an attempt to give political expression to the Arab nations. The original charter members were Egypt, Iraq, Jordan (then know...

Darfur

(Encyclopedia)Darfur därˈfo͞or [key], region and former sultanate, W Sudan. The region is mountainous, dominated by the central massif of Jebel Marra, which rises to 10,130 ft (3,088 m). Much of the terrain is d...

SETI

(Encyclopedia)SETI sĕtˈē [key] [Search for ExtraTerrestrial Intelligence], name given to a series of independent programs to detect radio signals from civilizations beyond the solar system. Modern SETI efforts c...

Ptolemaic system

(Encyclopedia)Ptolemaic system tŏlˌəmāˈĭk [key], historically the most influential of the geocentric cosmological theories, i.e., theories that placed the earth motionless at the center of the universe with a...