Kepler's 2nd Law

Kepler's 2nd Law ( Equal Areas in Equal Times: Variable - speed model ):

The Law of Equal Areas states that a line joining a planet and its star sweeps out equal areas during equal intervals of time. 

•   Sun = red circle

•  Planet = yellow circle

•  Blue arrow = initial condition

•  Red arrow = moving planet and is proportional to planet's velocity

•  Closer to the sun, the faster the planet passes in its transit orbit

•  Further from the sun, the slower the planet passes in its transit orbit

[ note: The last two observations hold because of Kepler's 2nd Law of Equal Areas where a planet sweeps out equal areas during equal intervals of time. ]

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