idea
Orbits
Kepler found that planets move on ellipses and that a line from the Sun sweeps equal areas in equal times. Newton later showed that one law of gravity explains all of it. For a while Kepler also hoped to find music in the planetary distances.
Connects to
- Models of the world
- Geometry
- Harmony of the spheres
- Lives of stars
- Why does math fit the world?
- Is the solar system stable?
- Why hear numbers in the sky?
- Ice ages