Labels:clock | crt screen | monitor | retaining wall | sky | telescope OCR: Kepl Er 5 LAW MOTI NO The empirical laws governing the motion 10 planets in their orbits, first noted Johannes Kepler 1571 1630 These are (a) the orbits of the planets are ellipses with the Sun common focus; b planet moves in its orbit the line joining the planet and sun sweeps over equa areas n equal intervals of time (also called the law of equal areas): c the squares Major Axis of the periods of revolution of any two Aphe Yo planets are proportional to the cubes of their mean distances from the sun Minor Axis three Cmoomm enbo helior
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