If it's cool with all of you, in this continuity, Trypticon was about [i]This[/i] close to being turned into a massive, fully sentient, robot space station in the shape of godzilla, but in the decepticon's rush to follow the Arc to wherever it was going, it could not be completed in time for Megatron's christening. So, we have a massive, mostly functional (but inactive) devastating space station hanging above the planet.