I have a theory that will end the series, maybe because as was already stated
that the rebellion takes a lot of loses when Adama et al takes the fleet back. That there is going to be ship losses somewhere in there, and the Cylons escape with the remaining fleet. Something happens like a beacon or some sort "the dying leader" comes in here. I think they took Roslin's cancer as the "dying" bit but... what if this "leader" gets injured in some way that is fatal, doesn't have to be immediatly fatal but is. Galactica still has nukes right?
This leader finds them a planet and this is the 'real' earth. The place the remanants of the 13th colony escaped too
Spoiler:
This leader finds them a planet and this is the 'real' earth. The place the remanants of the 13th colony escaped too
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