To navigate, use the Page Up(Down) buttons on the keyboard, while the mouse is in the frame of the 3D world, which will move you through the different viewpoints. Look for the appearance of the finger symbol, which indicates a clickable object. All planets and moons shown in the world are clickable and will bring up a detailed webpage with information about that body. Also, use the seek or target symbol to move directly to an object when it is clicked on.