Planets are pushed around the Sun by a force from the Sun. This false assumption relies on incorrect Aristotelian physics that an object needs to be pushed to maintain motion. The propelling force from the Sun is inversely proportional to the distance from the Sun. Kepler reasoned this, believing that gravity spreading in three dimensions would be a waste, since the planets inhabited a plane. Thus, an inverse instead of the [correct] inverse square law. Because Kepler believed that force would be proportional to velocity, it followed from statements #1 and #2 that velocity would be inverse to the distance from the sun. This is also an incorrect tenet of Aristotelian physics. Since velocity is inverse to time, the distance from the sun would be proportional to the time to cover a small piece of the orbit. This is approximately true for elliptical orbits. The area swept out is proportional to the overall time. This is also approximately true. The orbits of a planet are circular (Kepler discovered his Second Law before his First Law, which contradicts this).
Planets are pushed around the Sun by a force from the Sun This false assumption relies on incorrect Aristotelian physics that an object needs to be pushed to maintain motion The propelling force from the Sun is inversely proportional to the distance from the Sun Kepler reasoned this believing that gravity spreading in three dimensions would be a waste since the planets inhabited a plane Thus an inverse instead of the [correct] inverse square law Because Kepler believed that force would be proportional to velocity it followed from statements #1 and #2 that velocity would be inverse to the distance from the sun This is also an incorrect tenet of Aristotelian physics Since velocity is inverse to time the distance from the sun would be proportional to the time to cover a small piece of the orbit This is approximately true for elliptical orbits The area swept out is proportional to the overall time This is also approximately true The orbits of a planet are circular (Kepler discovered his Second Law before his First Law which contradicts this)