... Six Worlds for Kepler 11 . ... Credit Copyright: Tim Pyle, NASA Explanation: Six worlds orbit Kepler-11 , a sunlike star 2,000 light-years distant in the constellation Cygnus. The new discovery, based on data from NASA's planet hunting Kepler spacecraft , makes the Kepler-11 system the fullest exoplanetary system known. ... Their presence, sizes, and masses have been determined by carefully watching the planets dim the light of Kepler-11 while transiting or crossing in front of the star itself. ...