Was it a bird? Was it a plane? A comet? A star? A supernova? Or the spirit of little baby Jesus falling from grace, down into a smelly shed in downtown Bethlehem? Only God knows, but in his book Astronomia Nova, our hero “in-the-know Jo” had a couple of things to say…

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The orbital dynamics used in successful space missions, the Global Positioning System, and other modern applications owe their existence to Kepler’s discovery. Similar successes in mathematical modelling today may reveal hidden connections between fundamental forces such as gravity and electromagnetism (even anti-gravity or warp drives might result), reproduce useful aspects of human intelligence on computers, […]

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Kepler wanted to know how the Solar System works, not just to describe it with mathematical formulas. In Part III of The New Astronomy he searched for and identified the physical causes of planetary motion, illustrated in Keplers Discovery

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