Labels:text | font | screenshot | document OCR: 1784 Born on July 22 in Minden, Germany. 1799 Starts work as an apprentice shipping clerk in an export company. In his spare time he studies mathematics and astronomy. 1804 Writes a paper on Halley's Comet, which he sends to the astronomer Heinrich Olbers (1758-1840). Olbers is impressed enough to arrange for its publication and to find an assistant's post for Bessel at Lilienthal Observatory, Germany. 1808 The Prussian government commissions Bessel to construct the first large German observatory at Königsberg. 1810 Appointed Director of the Königsberg Observatory. 1813 The Königsberg Observatory is completed. Bessel remains as its director until his death. 1838 Shows that the star 61 Cygni appears to move in an ellipse each year. He concludes that this is due to the Earth's movement aroun ...
