Orbital Motion & Gravity

Mars was in orbit around the Sun, rather than around the Earth. He experimented (mathematically) with orbits of various shapes, and found that Mars’ orbit best fits an ellipse . 20 2c.1 Kepler ’s 1 st Law (1605) • Law No. 1. Each planet moves around the Sun in an orbit that is an ellipse , with the Sun at one focus . ................
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