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Ce guide presente une selection des nombreuses ressources internet gratuites creees par et pour des astronomes, amateurs ou professionnels : metasites, ressources educatives, bases de donnees Web d'astronomie specialisee, sites de laboratoires et de publications prealables, information de recherche et de publication, societes professionnelles, ressources historiques et biographiques, groupes de discussion et canaux de communication.

INTERNET RESOURCES: Astronomy resources on the Web: Sites for the amateur and professional astronomer