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How we can prove (using geomtry and not differential equation) that the orbit of planet have to be a conic section.
A conic section is a curve that is formed when a plane intersects with a cone. There are four types of conic sections: circle, ellipse, parabola, and hyperbola.
According to Kepler's laws of planetary motion, a planet moves around the sun in an elliptical orbit with the sun at one of the two foci. This means that the orbit of a planet must be a conic section in order to follow Kepler's laws.
The shape of a conic section determines the eccentricity of the orbit. A circle has an eccentricity of 0, an ellipse has an eccentricity between 0 and 1, a parabola has an eccentricity of 1, and a hyperbola has an eccentricity greater than 1. The eccentricity of the orbit affects the speed and distance of the planet from the sun.
Yes, any object that orbits around another object in space will follow a conic section. This includes planets, moons, comets, and artificial satellites.
Scientists can determine the shape of a planet's orbit by observing its motion and calculating its eccentricity. This can be done through telescopic observations, mathematical calculations, and computer simulations.