German astronomer Gottfried Kirch discovers the Great Comet of 1680, the first comet to be discovered by telescope.

Gottfried Kirch was a German astronomer active in the late 17th and early 18th centuries, best known for his meticulous observational work and for discovering the first comet recorded by a German astronomer in 1680. He came from humble beginnings, initially trained in mathematics and astronomy through self-study before earning broader recognition for the precision of his sky charts and celestial measurements. His early work built his reputation as someone who was both technically skilled and incredibly persistent with nightly observations.

Over the course of his career, Kirch became the first official astronomer of the Brandenburg Academy of Sciences in Berlin, a role that gave him both institutional support and access to better instruments. With these resources, he focused on improving star catalogs, monitoring planetary motion, and tracking comets—tasks that were central to emerging scientific efforts to understand orbital mechanics. He was also deeply involved in timekeeping; his astronomical observations were used to improve local calendars and refine the measurement of time, which was a major scientific priority of the era.

Kirch’s legacy is also tied to his family. His wife, Maria Margarethe Kirch, and later his children, were active collaborators in his astronomical work—an unusual and notable scientific family for the period. Together, they operated one of the most productive observatories in Germany, making long-term observational records that became important references for later astronomers. Although he isn’t as widely known today as some of his contemporaries, the precision and consistency of his work helped establish a stronger foundation for systematic astronomy in Central Europe.