Multiple-planet systems discovered by Kepler as of 2/2/2011; all the systems with outer semi-major axis <0.17 AU are shown, so that the details of these compact systems can be seen. Orbits go through quarters Q0-Q2. Hot colors to Cool colors (Red to yellow to green to cyan to blue to gray) are Big planets to Smaller planets, relative to the other planets in the system. You can also view this on YouTube:
http://www.youtube.com/watch?v=wYLwoPTIQx4
