Orbit and Rotation is an animation showing the orbit and rotation of Mercury around the sun. By clicking on the "Play: button in the lower-left corner of the animation, you can see Mercury make its counter-clockwise orbit around the sun. Mercury automatically stops at three different points during the animation. When the planet stops, text appears on the screen that indicates how many days the planet has taken to get to that point–both in terms of Earth days and Mercury days. You can also choose to stop the rotation manually, using the "Stop" button. There is an "About this Animation" button in the upper-right corner that you can click on to find out more about the animation, how to use it, and learn more about Mercury’s rotation around the sun.