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As implied earlier, according to Kepler's laws, Earth’s orbit is an ellipse with the Sun at one focus. The
perihelion for Earth’s orbit around the Sun is 147,098,290 km and the aphelion is. 152,098,232 km.
a. By placing the major axis along the x-axis, find the average distance from Earth 10 the Sun.
b. The classic definition of an astronomical unit (AU) is the distance from Earth to the Sun, and its value was computed as the average of the perihelion and aphelion distances. Is this definition justified?

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