Theorems and Laws [1]
Law: Kepler's First Law
Kepler's First Law (Law of Ellipses)
- Each planet moves in an elliptical orbit with the Sun at one focus.
- This means planetary orbits are stretched circles, not perfect circles.
- The ellipse has two foci; the Sun occupies one of these.
Concepts [4]
- Introduction to How Seasons Occur
- Apparent Movement of the Sun
- Law of Orbit or Kepler's First Law
- The Cycle of Season and the Living World
