In 1809 he published a book on the theory of the motion of the planets called the ‘Theoria Motus Corporum Coelestium’.He used the method of least squares which is also used today to calculate the values from existing annotations.
This great mathematician was born on 30th April 1777 in Braunschweig-Wolfenbüttel, Germany.
Son of Gebhard Dietrich Gauss, who was a gardener and a brick layer and mother Dorothea Gauss, who was the daughter of a stonecutter; a very simple and uneducated family, Gauss showed immense aptitude for mathematics since the start of his education.
He was also the first to develop Non-Euclidean geometry.
He did not publish any related work because he did not want to get involved in any controversies.
As his mother was illiterate she had no record of his birth date.
Being a child prodigy, Gauss used some calculations to work it out himself.
I've had this translation of the Disquisitiones Arithmeticae (=DA) for more than 10 years and I've paged through it many times, but I'm always disappointed.
The DA is monumentally important and I'm disappointed by this edition, not the DA itself.
They also made an electromagnetic telegraph in 1833 which led to a connection between the observatory and the institute of Physics.