var fDesc=new Array();
fDesc[0] = "Gravel is a simple simulation which models the behaviour of astronomical objects in space, according to Newton&#039;s Laws of Gravity. <br /> You define several objects (stating their mass (kg), position (m) and velocity (m/s)) and Gravel calculates how these objects would behave in space.<br /> You can even tell Gravel to place one or more objects in orbit around an other object and Gravel will automatically choose the right orbital speed.";

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