# Sofia Edstrand: Johannes Kepler and his Planetary Model

**Time: **
Wed 2021-06-02 12.00 - 13.00

**Location: **
Meeting ID: 697 4204 2109

**Respondent: **
Sofia Edstrand

### Abstract

This essay sets out to give an account on Johannes Kepler's planetary model. It starts by looking at the Platonic solids, which play a major role in Kepler's theory, and leads us back to the Greek mathematicians and philosophers, especially Euclid and his mathematical text the Elements. We look at the proof from the Elements of why there are only five Platonic solids and compare that proof to a more modern proof by Euler during the eighteenth century. We then move on to look at the time Kepler lived in to finally conclude how he constructed his planetary model.

**Zoom notes:** Password required, contact
arias@math.su.se