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Hubble, Edwin Powell
(Encyclopedia)Hubble, Edwin Powell, 1889–1953, American astronomer, b. Marshfield, Mo. He did research (1914–17) at Yerkes Observatory, and joined (1919) the staff of Mt. Wilson Observatory, Pasadena, Calif., o...artery
(Encyclopedia)artery, blood vessel that conveys blood away from the heart. Except for the pulmonary artery, which carries deoxygenated blood from the heart to the lungs, arteries carry oxygenated blood from the hea...Pensacola
(Encyclopedia)Pensacola pĕnsəkōˈlə [key], city (1990 pop. 58,165), seat of Escambia co., extreme NW Fla., on Pensacola Bay; inc. 1822. It is a port of entry with a natural harbor and shipping and fishing indus...dwarf planet
(Encyclopedia)dwarf planet, a nonluminous body of rock or gas that orbits the sun and has a rounded shape due to its gravity. Unlike a planet, a dwarf planet is not capable of clearing its orbit of smaller objects ...Hertzsprung-Russell diagram
(Encyclopedia) CE5 The Hertzsprung-Russell diagram shows the relation between the luminosity and surface temperature (which is related to spectral class, or color) of the stars in the Milky Way. Most stars fall a...Styron, William
(Encyclopedia)Styron, William, 1925–2006, American novelist, b. Newport News, Va., grad. Duke, 1947. His fiction is often powerful, deeply felt, poetic, and elegiac. He became well known for his novel The Confess...Shepard, Sam
(Encyclopedia)Shepard, Sam, 1943–2017, one of the major American playwrights and actors of his era, b. Fort Sheridan, Ill., as Samuel Shepard Rogers 3d. A product of the 1960s counterculture and an important figu...larynx
(Encyclopedia)larynx lârˈĭngks [key], organ of voice in mammals. Commonly known as the voice box, the larynx is a tubular chamber about 2 in. (5 cm) high, consisting of walls of cartilage bound by ligaments and ...kaleidoscope
(Encyclopedia)kaleidoscope kəlīˈdəskōp [key], optical instrument that uses mirrors to produce changing symmetrical patterns. Invented by the Scottish physicist Sir David Brewster in 1816, the device is usually...satellite, natural
(Encyclopedia)satellite, natural, celestial body orbiting a planet, dwarf planet, asteroid, or star of a larger size. The most familiar natural satellite is the earth's moon; thus, satellites of other planets are o...Browse by Subject
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