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Birkenhead, Frederick Edwin Smith, 1st earl of

(Encyclopedia)Birkenhead, Frederick Edwin Smith, 1st earl of bûrˈkənhĕdˌ [key], 1872–1930, British statesman and jurist. He was called to the bar in 1899 and entered the House of Commons as a Conservative in...

dark energy

(Encyclopedia)dark energy, repulsive force that opposes the self-attraction of matter (see gravitation) and causes the expansion of the universe to accelerate. The search for dark energy was triggered by the discov...

Lowell Observatory

(Encyclopedia)Lowell Observatory, astronomical observatory located in Flagstaff, Ariz.; it was founded in 1894 by Percival Lowell, the American astronomer who popularized the idea that Mars might support intelligen...

galaxy

(Encyclopedia)CE5 Hubble classification of galaxies: Elliptical galaxies (E) are classified according to the degree of flattening of the ellipse. Spiral galaxies (S) and barred spiral galaxies (SB) are classifie...

Webb Space Telescope

(Encyclopedia)Webb Space Telescope or James Webb Space Telescope (JWST), is an infrared space telescope, the largest in space at its launc...

Booth, John Wilkes

(Encyclopedia)Booth, John Wilkes wĭlks [key], 1838–65, American actor, the assassin of Abraham Lincoln, b. near Bel Air, Md.; son of Junius Brutus Booth and brother of Edwin Booth. He made his stage debut at the...

Rangel, Charles Bernard

(Encyclopedia)Rangel, Charles Bernard răngˈgəl [key], 1930–, U.S. congressman, b. New York City. Receiving his law degree from St. John's Univ. in 1960, Rangel served in the New York state assembly (1966–70)...

Flaming Gorge Dam

(Encyclopedia)Flaming Gorge Dam, in a deep canyon of the Green River, NE Utah; built 1958–63 by the U.S. Bureau of Reclamation as a major unit in the Colorado River storage project. The dam regulates the flow of ...

Geological Survey, United States

(Encyclopedia)Geological Survey, United States, bureau organized in 1879 under the Dept. of the Interior to unify and centralize the work already undertaken by separate surveys under Clarence King, F. V. Hayden, Ge...