* Astronomy

Carl Christian Koldewey (born October 26, 1837 in Bücken near Hoya, Germany; died May 17, 1908 in Hamburg) was a German Arctic explorer. He led both German North Polar Expeditions.
From 1869 to 1870 he was captain of the Germania and the leader of another expedition to Greenland and to the Arctic Sea which intended to penetrate into the Arctic central region. It was equipped with the propeller steamboat Germania and the sailing ship Hansa under captain Paul Friedrich Hegemann. Six scientists joined the expedition: astronomers and physicists Karl Nikolai Jensen Börgen and Ralph Copeland, zoologist, botanist and physician Adolf Pansch, and surveyor Julius von Payer. On the Hansa travelled physician and zoologist R. Buchholz and geologist Gustav Carl Laube.
Read more