Requiem
From Halopedia, the Halo wiki
At the end of cutscene for the Legendary ending of Halo 3, The section of the UNSC Frigate Forward Unto Dawn containing Master Chief and Cortana, is seen drifting towards an unknown planet, when light is shined across the surface of the planet there is a large Marathon symbol on the surface.
File:Snapshot 2008-02-24 18-42-09.JPG
Close up view of Marathon Symbol on the planet
File:Planet.jpg
View of FUD drifting towards the Legendary Planet (marathon symbol & a Forerunner symbol are visible)
