Quote Originally Posted by EOD EAGLE View Post
I think the planet in the end of Halo 3 is the Forerunner Homeworld, because if you watch Halo Legends you know that the Forerunner Homeworld is on the outside of the galaxy. Chief stayed on the outside of the galaxy.
we don't know where the cheif is, all we know is that he is between the Ark and earth as the portal collapsed on him stopping the travel. he could be in the galaxy for all we know.