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Denmark's unknown astronomer was only recognised after 242 years: who was he?

Article in Videnskab.dk: Christian Horrebow was the first to suggest that the sun has a cycle. However, this was ignored by both his contemporaries and the posterity. The reason for this is to be found in a clock that went wrong and thus gave Christian Horrebow a reputation as unreliable.

By: Christoffer Karoff - Associate Professor, Department of Geoscience and Department of Physics and Astronomy, Aarhus University & Carsten Sønderskov Jørgensen - Cand.scient. from Department of Physics and Astronomy, Aarhus University.

Read the article (in Danish)