When the "Abyss Without Balance" quest asks you to hang on the middle of the powered device, it's referring to the large, circular doorway. Climb to the center, then use Force Palm to activate it.

We may finally be about to learn a bit more about what happened to the abandoned colony on Tau Ceti in Bungie’s Marathon ...

After players completed a lengthy ARG in and out of the game, Bungie has revealed new details about the extraction shooter's toughest map yet.