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the International Astronomical Union

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  • International Astronomical Union — The International Astronomical Union (IAU) unites national astronomical societies from around the world. It also acts as the internationally recognized authority for assigning designations to celestial bodies (stars, planets, asteroids, etc.) and …   Wikipedia

  • International Astronomical Union — Union astronomique internationale Logo de l Union astronomique internationale Contexte général Champs d action Coordination des travaux astronomiques Zone d influence …   Wikipédia en Français

  • International Astronomical Union —       senior body governing international professional astronomical activities worldwide, with headquarters in Paris. It was established in 1919 as the first of a series of international unions for the advancement of specific branches of science …   Universalium

  • International Year of Astronomy — The International Year of Astronomy is a year long celebration of astronomy, taking place in 2009 to coincide with the 400th anniversary of the first recorded astronomical observations with a telescope by Galileo Galilei and the publication of… …   Wikipedia

  • International Council for Science — The International Council for Science (ICSU), formerly called the International Council of Scientific Unions, was founded in 1931 as an international non governmental organization devoted to international co operation in the advancement of… …   Wikipedia

  • Union Astronomique Internationale — Logo de l Union astronomique internationale Contexte général Champs d action Coordination des travaux astronomiques Zone d influence …   Wikipédia en Français

  • International Star Registry — The International Star Registry (ISR), founded in 1979, enables buyers to name a star as a gift or memorial. Once the star is named, the ISR publishes its telescopic coordinates in a book called Your Place in the Cosmos. The names in this book… …   Wikipedia

  • International Celestial Reference System — The International Celestial Reference System (ICRS) is the current standard celestial reference system adopted by the International Astronomical Union (IAU). Its origin is at the barycenter of the solar system, with axes that are intended to be… …   Wikipedia

  • Astronomical unit — This article is about unit of length. For the full system of units, see Astronomical system of units. 1 astronomical unit = SI units 149.60×10^6 km 149.60×10^9 m Astronomical units 4.8481 …   Wikipedia

  • Astronomical naming conventions — In ancient times, only the Sun and Moon, a few hundred stars and the most easily visible planets had names. Over the last few hundred years, the number of identified astronomical objects has risen from hundreds to over a billion, and more are… …   Wikipedia

  • astronomical map — Introduction       any cartographic representation of the stars, galaxies, or surfaces of the planets and the Moon. Modern maps of this kind are based on a coordinate system analagous to geographic latitude and longitude. In most cases, modern… …   Universalium

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