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Mayor, Michel Gustave Edward
(Encyclopedia) Mayor, Michel Gustave Edward, 1942–, Swiss astrophysicist, Ph.D. Univ. of Geneva, 1971. He spent his entire career at the Univ. of Geneva, retiring as professor emeritus in 2007. In…luminosity
(Encyclopedia) luminosity, in astronomy, the rate at which energy of all types is radiated by an object in all directions. A star's luminosity depends on its size and its temperature, varying as the…Spica
(Encyclopedia) SpicaSpicaspīˈkə [key], brightest star in the constellation Virgo; Bayer designation Alpha Virginis; 1992 position R.A. 13h24.8m, Dec. −11°07′. A bluish-white star of spectral class B1…Atholston, Hugh Graham, 1st Baron
(Encyclopedia) Atholston, Hugh Graham, 1st BaronAtholston, Hugh Graham, 1st Baronăthˈəlstən [key], 1848–1938, Canadian newspaper publisher. He was the founder and proprietor (1869) of the evening…Castor, in astronomy
(Encyclopedia) CastorCastorkăsˈtər [key], bright star in the constellation Gemini; Bayer designation α Geminorum; 1992 position R.A. 7h34.1m, Dec. +31°54′. Slightly dimmer than Pollux, with which it…Messier catalog
(Encyclopedia) Messier catalogMessier catalogmĕsyāˈ [key], systematic list of nebulae and star clusters. A first list, compiled and published in 1771 by Charles Messier, contained 45 objects. The…Aquila, in astronomy
(Encyclopedia) Aquila [Lat.,=the eagle], equatorial constellation located N of Sagittarius and Capricornus, lying partly in the Milky Way. It is sometimes depicted as an eagle. It contains the bright…ruby
(Encyclopedia) ruby, precious stone, the transparent red variety of corundum, found chiefly in Myanmar, Thailand, and Sri Lanka and classified among the most valuable of gems. The Myanmarese stones…neutrino astronomy
(Encyclopedia) neutrino astronomy, study of stars by means of their emission of neutrinos, fundamental particles that result from nuclear reactions and are emitted by stars along with light.…Ursa Major and Ursa Minor
(Encyclopedia) Ursa MajorUrsa Majorûrˈsə [key] and Ursa Minor [Lat.,=the great bear; the little bear], two conspicuous northern constellations. Known to many peoples from ancient times, these…Trending
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