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• Astrophysical Journal — Infobox Journal title = The Astrophysical Journal editor = Ethan Vishniac discipline = Astronomy and Astrophysics language = English abbreviation = ApJ; Astrophys. J. publisher = University of Chicago Press for the American Astronomical Society… …   Wikipedia

• Law enforcement in France — OrganizationsAgenciesFrance has two national general purpose law enforcement agencies: * the Police Nationale (civilian force; primary responsibility in urban areas; run under the Ministry of the Interior) * the Gendarmerie Nationale (military… …   Wikipedia

• Stanford E. Woosley — Blake Stanford E. Woosley (born February 26, 1944) is a physicist, and Professor of Astronomy and Astrophysics. He is the director of the Center for Supernova Research at UCSC. He has published over 300 papers.Research InterestBlake Woosley s… …   Wikipedia

• Diazenylium — N2H+, known as diazenylium, was one of the first ions to be observed in interstellar clouds. Since then, it has been observed for a variety of purposes in several different types of interstellar environments. It gives astronomers information… …   Wikipedia

• Ammonia — For other uses, see Ammonia (disambiguation). Ammonia …   Wikipedia

• Messier 83 — An ESO image of Messier 83. Credit: ESO. Observation data (J2000 epoch) Constellation Hydra …   Wikipedia

• Uhuru (satellite) — Uhuru was the first satellite launched specifically for the purpose of X ray astronomy. It was also known as the X ray Explorer Satellite, SAS 1 (for Small Astronomy Satellite 1, being first of the three spacecraft SAS series), or Explorer 42.… …   Wikipedia

• Delta Pavonis — Observation data Epoch J2000      Equinox J2000 Constellation Pavo Right ascension 20h 08m 43.6084s[1] …   Wikipedia

• Flatness problem — The local geometry of the universe is determined by whether the relative density Ω is less than, equal to or greater than 1. From top to bottom: a spherical universe with greater than critical density (Ω>1, k>0); a hyperbolic, underdense… …   Wikipedia

• Cor Caroli — seen from northern England on March 1, 2011. Cor Caroli (α CVn, α Canum Venaticorum, Alpha Canum Venaticorum, originally known by the more elaborate Cor Caroli Regis Martyris) is the brightest star in the northern constellation Canes Venatici.… …   Wikipedia