OK, I have developed a theory and I wish to test it before I begin making a mock model of my experiment. In order to do this, I need a robust program, and im hoping somebody has an idea of what programs I can use! Basically the program must be able to simulate earth. At the same time i need it to be able to calculate speed, velocity, calculate 2 different pressure enviroments and the effect on the object as it transitions between the two. At the same time i need it to be able to calculate and simulate magnetic repulsion/attraction for both standard magnetics and superconductors. While all at the same time, within the earth enviroment. The program must be preferably open source(IE "free") and i really dont care if its for linux or for windows, I operate both. Sorry if im being really vague about this, but the idea I have is something im not really willing to discuss openly until i am done with this simulation; Let me know if i can clarify things.