基于vb的3D地球等行星编程，可以准确的显示行星运动轨迹，旋转速度等参量，应用价值极高，希望对初学者有所启发。-Based on the 3D Earth and other planets vb programming, you can accurately display the trajectory of the planets, rotation speed and other parameters, the application of high value, hope to insp