Summary:
- This article discusses the 17th-century astronomer Johannes Kepler and his discovery of the laws of planetary motion, which helped solve a mystery about the solar system.
- Kepler's drawings and calculations showed that planets orbit the Sun in elliptical paths, rather than circular paths as previously believed. This helped explain the observed motions of the planets.
- Kepler's work laid the foundation for our modern understanding of the solar system and how the planets move around the Sun, which is an important scientific breakthrough.