This LabRat video outlines two physical descriptions as to why orbiting objects follow a curved trajectory around the earth. One description deals with horizontal and vertical distance travelled over a time period and the other deals with the balance of the gravitational force and the "centrifugal" force due to the speed of the orbiting object. This video is intended for high school teachers and students. More information on this topic can be found at www.labratscientific.com.