international astronomical union
1International Astronomical Union — Union astronomique internationale Logo de l Union astronomique internationale Contexte général Champs d action Coordination des travaux astronomiques Zone d influence …
2International 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 …
3International 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 …
4Union Astronomique Internationale — Logo de l Union astronomique internationale Contexte général Champs d action Coordination des travaux astronomiques Zone d influence …
5Astronomical 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 …
6International 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… …
7Astronomical 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… …
8International 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… …
9astronomical 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… …
10Union astronomique internationale — l Union astronomique internationale Contexte général Champs d’action Coordination des travaux astronomiques Zone d’influence Monde …
