Example image of eyePlorer eyePlorer map for 'Johann Gottfried Koehler': 1745 1801 Astronomer December 15 Galaxy Germany Nebula September 19 Star cluster Messier 59 Messier 60 Messier 67 1779 April 11 Johann Elert Bode Koehler Messier 71 1745 in science Alexander von Humboldt
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