Cygnus A-1:
A binary system where Cygnus A still has the standard radius and energy of a star with multiple worlds, including one that's habitable.  Cygnus B is just a dwarf star with only a couple empty planets orbiting it.
An unexplored world within the habitable zone of Cygnus A.  A great deal of cloud cover hides the surface, and it has yet to be explored.