Relier Pairs Planets and Planetary Motion Version en ligne Study the planets par Bethaney Barber 1 The Movement of an object around another object 2 A force of attraction between objects that is due to their masses 3 The Spinning Motion of a planet on its axis 4 The path of an object as it revolves around another object in space 5 The movement of an object around another object 6 1) The orbit of planets are shaped like an ellipse (oval). 2) Planets move in their orbits FASTER in some places and SLOWER in some places. 3) Planets further from the Sun take longer to orbit. Kepler's laws of planetary motion Revolution Rotation Inertia Orbit Gravity