The aim of the simulation is to accurately reproduce the rotation of the Earth around the Sun.  First the correct masses of the Earth and the Sun had to be researched, as well as the distance between these two celestial objects.  From this information and from the known period of rotation of the Earth, one can calculate the speed at which our planet travels around the Sun.  The simulation is meant to show that given the right initial speed, distance and masses, the Earth will rotate in an almost perfect circle.  Also, if the Earth is placed further or closer to the Sun, its rotation will not be in a circle but in a very pronounced ellipse.

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