Kepler Orrery of exoplanets
via youtube.com
All the multiple-planet systems discovered by Kepler, an exoplanet space mission of NASA, as of 2nd Feb. 2011; orbits go through the entire mission (3.5 years). 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.
An Astrophysicist looking at cool stars
