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NBI
tanım: Member information, meeting announcements, publications and reports, awards, and links to related sites.
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Site Konuları: astronomy
The Astronomical Society of South Australia was founded in 1892 and is the oldest society of its kind in Australia.
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Key activities include research and observing planets, stars, celestial phenomena and the abatement of light pollution.
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International Occultation Timing Association Administrative Website
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an international society of amateur and professional astronomers specialising in the observation of double stars and deep sky objects
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The world's largest and most popular trivia website with over one million trivia questions and quizzes.
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Stellt verschiedene Webprojekte vor.
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Works to maintain the International Celestial Reference System and Frame, and the International Terrestrial Reference System and Frame, and to provide timely and ...
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Composed of over two hundred local amateur astronomical societies from across the United States. Information on national conventions (ALCons), member societies ...
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