Where is the Sun located according to Kepler's First Law of Planetary Motion regarding the ellipse?
Answer
At one of the two foci of that ellipse.
Kepler's First Law of Planetary Motion explicitly defines the orbital geometry by stating that the Sun, as the central star, is not positioned at the exact center of the orbit. Instead, the Sun occupies one of the two specific points known as the foci of the ellipse. If the Sun were positioned in the exact middle, the resulting path would be a circle, which is mathematically categorized as a degenerate form of an ellipse where both foci converge into a single central point. The placement of the Sun at one focus ensures that the planet's distance from the Sun constantly changes throughout its revolution.

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