"*The focal radius joining a planet to the sun sweeps out equal areas in equal times.*"

II. The line joining the planet to the Sun sweeps out equal areas in equal times as the planet travels around the ellipse.

**Attraction**
(click to enlarge)

See Also

**Kepler**
**Kepler Music of the Spheres**
**Kepler Music Theory**
**Kepler Theory of Harmony**
**Kepler's First Law**
**Kepler's Third Law**
**Propositions of Astronomy**