seven of which are still used by astronomers.

Etymology

According to the Polish Academy of Sciences (1975) the origin of the name goes back to the surname Hawke, a historical alternative spelling for the English word hawk, which changed into Hawelke or Hawelecke.In Poland he is known as Jan Heweliusz. Other versions of the name include Hewel, Hevel, Hevelke or Hoefel, Höwelcke, Höfelcke.According to

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