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solar wind
(Encyclopedia)solar wind, stream of ionized hydrogen—protons and electrons—with an 8% component of helium ions and trace amounts of heavier ions that radiates outward from the sun at high speeds. The continuous...Kitt Peak National Observatory
(Encyclopedia)Kitt Peak National Observatory, astronomical observatory located southwest of Tucson, Ariz.; it was founded in 1958 under contract with the National Science Foundation and is administered by the Assoc...Haleakala Observatories
(Encyclopedia)Haleakala Observatories häˌlāäˌkäläˈ [key], astronomical facilities located on the summit of Haleakala volcano, 10,023 ft (3,055 m), in Haleakala National Park, Maui island, Hawaii. Because of...planetesimal theory
(Encyclopedia)planetesimal theory plănˌĭtĕsˈəməl [key]: see solar system. ...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...astronomical unit
(Encyclopedia)astronomical unit (AU), mean distance between the earth and sun; one AU is c.92,960,000 mi (149,604,970 km). The astronomical unit is the principal unit of measurement within the solar system, e.g., M...Hulse, Russell Alan
(Encyclopedia)Hulse, Russell Alan, 1950–, American astrophysicist, b., New York City, Ph.D. Univ. of Massachusetts, Amherst, 1975. Hulse was a researcher at the Princeton's plasma physics laboratory from 1977 unt...Ganymede, in astronomy
(Encyclopedia)Ganymede gănˈēmēdˌ [key], in astronomy, one of the moons, or natural satellites, of Jupiter; the largest natural satellite in the solar system, it is larger than the planet Mercury. ...Taylor, Joseph Hooton, Jr.
(Encyclopedia)Taylor, Joseph Hooton, Jr., 1941–, American astrophysicist, b. Philadelphia, Ph.D. Harvard, 1968. Taylor was a professor at the Univ. of Massachusetts at Amherst from 1969 to 1980, when he joined th...corona, in astronomy
(Encyclopedia)corona, luminous envelope surrounding the sun, outside the chromosphere. Its density is less than one billionth that of the earth's atmosphere. The corona is visible only at the time of totality durin...Browse by Subject
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