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Date: 2008-03-18 13:34:53International Astronomical Union Planets International Year of Astronomy Astronomical naming conventions Definition of planet Planet Universe Awareness European Southern Observatory Gart Westerhout Astronomy Space Planetary science | Microsoft Word - ib_99_12_20_06_with cover.docAdd to Reading ListSource URL: www.iau.orgDownload Document from Source WebsiteFile Size: 1.010,65 KBShare Document on Facebook |