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Schiaparelli, Giovanni Virginio

(Encyclopedia) Schiaparelli, Giovanni VirginioSchiaparelli, Giovanni Virginiojōvänˈnē vērjēˈnyō [key]Schiaparelli, Giovanni Virginio skyäpärĕlˈlē [key], 1835–1910, Italian astronomer. He was director…

Horrocks, Jeremiah

(Encyclopedia) Horrocks or Horrox, JeremiahHorrocks or Horrox, Jeremiahboth: hŏrˈəks [key], 1618?–1641, English astronomer. He made the first observation of the transit of Venus. His Venus in sole…

Olatunji, Babatunde

(Encyclopedia) Olatunji, Babatunde, 1927–2003, Nigerian drummer, b. Ajido. Educated in the United States, he graduated from Atlanta's Morehouse College in 1954 and studied at New York Univ. A Yoruba…

Vulcan, in astronomy

(Encyclopedia) Vulcan, in astronomy, hypothetical planet whose existence was proposed by Le Verrier to explain part of the advance of the perihelion of Mercury, not all of which could be accounted…

albedo

(Encyclopedia) albedoalbedoălbēˈdō [key], reflectivity of the surface of a planet, moon, asteroid, or other celestial body that does not shine by its own light. Albedo is measured as the fraction of…

solar system

(Encyclopedia) CE5 Solar system CE5 solar system, the sun and the surrounding planets, natural satellites, dwarf planets, asteroids, meteoroids, and comets that are bound by its gravity. The…

perturbation

(Encyclopedia) perturbationperturbationpŭrˌtərbāˈshən [key], in astronomy and physics, small force or other influence that modifies the otherwise simple motion of some object. The term is also used…

Mars, in astronomy

(Encyclopedia) Mars, in astronomy, 4th planet from the sun, with an orbit next in order beyond that of the earth. Mars has two natural satellites, discovered by Asaph Hall in 1877. The innermost…

virtual telescope

(Encyclopedia) virtual telescope, a computerized interferometer (see interference) that merges the images from two or more telescopes to obtain a single, large, enhanced image. The image in each…