Clearly the closer the planet to the Star, the shorter the time period.
{"Image DocumentName": "Clearly the closer the planet to the Star, the shorter the time period.", "Image ImageDescription": "(Kepler discovered his laws using observational data taken by the astronomer Tycho Brahe. A century later Newton derived Keplers laws from his own laws of motion.) T2 = 4\u03c02. r3 GM. Thus for any planet orbiting a star in a circular orbit, T2 is proportional to r3. Also the ratio T2/r3 is constant. This is known as Kepler\u2019s third law.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}