This application allows you to explore the Newtonian gravity laws applied in space for a number of galaxies of your choice. You will find that art and physics can be combined to show spectacular results.A fine selection of music has been prepared to accompany you through the journey in the laws of our physical world.The algorithm is based on n-body problem. This is the problem of predicting the motion of a group of celestial objects that interact with each other gravitationally. Solving this problem has been motivated by the need to understand the motion of the Sun, planets and the visible stars. Its first complete mathematical formulation appeared in Isaac Newton's Principia (wiki).