animation: many computations don't make sense or don't make an impression until you can present them graphically. For time-dependent results, an animation can bring your results to life. Animations can be built by saving a sequence of snapshot files and calling some function to paste them together, or by using the Python utility FuncAnimation(). We focus on animating the Arenstorf orbit, to see how the orbiter is able to rendezvous with a moving target.
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