A
. Consider two bodies in space: Earth and the Moon. Newtonian mechanics allows us to predict the orbital motions of these two bodies perfectly. Yet, when we add a third body, the Sun, we discover a level of complexity that defies Newtonian predictability. The gravitational interactions among these three bodies create a dynamic, nonlinear system where slight variations in initial conditions, for example, minor variations in the distances or velocities of any one body, can lead to vastly different outcomes; the long-term positions of the three bodies become practically impossible to predict
A
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