Second Level Subjects
Astronomy is a natural science that studies celestial objects and phenomena. It uses mathematics, physics, and chemistry in order to explain their origin and evolution. Objects of interest include planets, moons, stars, nebulae, galaxies, and comets. Relevant phenomena include supernova explosions, gamma ray bursts, quasars, blazars, pulsars, and cosmic microwave background radiation. More generally, astronomy studies everything that originates outside Earth's atmosphere. Cosmology is a branch of astronomy. It studies the Universe as a whole.
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Organizations relating to Astronomy
Solar Influences Data Analysis Centre / Brussels, Belgium / Est. 1981
Strasbourg Astronomical Data Centre / Strasbourg, France / Est. 1972
Nordic Optical Telescope Scientific Association / Breña Baja, Spain / Est. 1984
Joint Institute for VLBI in Europe / Dwingeloo, Netherlands / Est. 1993
International Dark-Sky Association / Tucson AZ, USA / Est. 1988
Arab Union for Astronomy and Space Sciences / Sharjah, United Arab Emirates / Est. 1998
Treaty on Principles Governing the Activities of States in the Exploration and Use of Outer Space, Including the Moon and other Celestial Bodies / Est. 1967
International Association of Geodesy / Masala, Finland / Est. 1862
Blue Moon Fund / Charlottesville VA, USA / Est. 2002
Council of European Geodetic Surveyors / Brussels, Belgium / Est. 1972
International Commission on Planetary Atmospheres and their Evolution / Madison WI, USA
Association of French Speaking Planetaria / Strasbourg, France / Est. 1989
European Solar Thermal Electricity Association / Brussels, Belgium / Est. 2007
European Organization for Astronomical Research in the Southern hemisphere / Garching, Germany / Est. 1962
Webb Society / Cambridge, UK
European VLBI Network / Manchester, UK / Est. 1980
Astronomical Observatory for Central America / Tegucigalpa, Honduras / Est. 1997
International Association of Astronomical Artists / Est. 1982
International Laser Ranging Service / Greenbelt MD, USA / Est. 1998
SETI League / Little Ferry NJ, USA / Est. 1994
Ibero-American Astronomy League / Santa Fé, Argentina / Est. 1982
Christopher Sun Evangelistic Association / Arcadia CA, USA / Est. 1984
Latin American Child\'s Audiovisual Universe / Havana, Cuba / Est. 1988
International VLBI Service for Geodesy and Astrometry / Greenbelt MD, USA / Est. 1999
International Society for the Study of the Origin of Life - International Astrobiology Society / Florence, Italy / Est. 1972
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