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This category is within the scope of WikiProject Astronomy, which collaborates on articles related to
Astronomy on Wikipedia.AstronomyWikipedia:WikiProject AstronomyTemplate:WikiProject AstronomyAstronomy articles
This category is within the scope of WikiProject Telecommunications, a collaborative effort to improve the coverage of
Telecommunications on Wikipedia. If you would like to participate, please visit the project page, where you can join
the discussion and see a list of open tasks.TelecommunicationsWikipedia:WikiProject TelecommunicationsTemplate:WikiProject TelecommunicationsTelecommunications articles