Karl Friedrich Zöllner was a German mathematician and astronomer born in 1834. He is best known for his work in the field of celestial mechanics and for his contributions to the understanding of planetary motion. Zöllner's research often focused on the mathematical principles governing the orbits of celestial bodies. In addition to his mathematical work, Zöllner was also interested in the intersection of science and philosophy. He engaged with ideas from notable figures such as Immanuel Kant and explored the implications of scientific discoveries on human understanding. His work contributed to the broader discourse on the nature of reality and perception in the 19th century.