Author:Johannes Fabricius

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Johannes Fabricius

Frisian/German astronomer and a discoverer of sunspots

Johannes Fabricius


  • De Maculis in Sole Observatis, et Apparente earum cum Sole Conversione Narratio ("Narration on Spots Observed on the Sun and their Apparent Rotation with the Sun") (1613)
    • Extract from De Maculis in Sole observatis (1611) translated by H. L. Crosby in Mitchell, Walter M. (1916), “The history of the discovery of solar spots”, Popular Astronomy 24 (233): 149-162 

Some or all works by this author were published before January 1, 1928, and are in the public domain worldwide because the author died at least 100 years ago. Translations or editions published later may be copyrighted. Posthumous works may be copyrighted based on how long they have been published in certain countries and areas.