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atmosphere

(Encyclopedia)CE5 Atmosphere atmosphere [Gr.,=sphere of air], the mixture of gases surrounding a celestial body with sufficient gravity to maintain it. Although some details about the atmospheres of other plane...

Hamilton, Alexander

(Encyclopedia)Hamilton, Alexander, 1755–1804, American statesman, b. Nevis, in the West Indies. By 1780 Hamilton had outlined a plan of government with a strong central authority to replace the weak system of t...

States-General

(Encyclopedia)States-General or Estates-General, diet or national assembly in which the chief estates (see estate) of a nation—usually clergy, nobles, and towns (or commons)—were represented as separate bodies....

space probe

(Encyclopedia)space probe, space vehicle carrying sophisticated instrumentation but no crew, designed to explore various aspects of the solar system (see space exploration). Unlike an artificial satellite, which is...

wind

(Encyclopedia)wind, flow of air relative to the earth's surface. A wind is named according to the point of the compass from which it blows, e.g., a wind blowing from the north is a north wind. The diurnal, or dai...

sun, in astronomy

(Encyclopedia)CE5 Structure of the sun sun, intensely hot, self-luminous body of gases at the center of the solar system. Its gravitational attraction maintains the planets, comets, and other bodies of the sola...

Enlightenment

(Encyclopedia)Enlightenment, term applied to the mainstream of thought of 18th-century Europe and America. Centered in Paris, the movement gained international character at cosmopolitan salons. Masonic lodges pla...

space science

(Encyclopedia)space science, body of scientific knowledge as it relates to space exploration; it is sometimes also called astronautics. Space science draws on the conventional sciences of physics, chemistry, biolog...

modern architecture

(Encyclopedia)modern architecture, new architectural style that emerged in many Western countries in the decade after World War I. It was based on the “rational” use of modern materials, the principles of funct...

Jupiter, in astronomy

(Encyclopedia)Jupiter jo͞oˈpətər [key], in astronomy, 5th planet from the sun and largest planet of the solar system. Astronomers have discovered 79 satellites orbiting Jupiter, but five of those, small sate...