The Borg Queen wrote:
Nova Prime is actually the real Earth, and the planet they think of as "Earth" is actually a completely alien world.
I thought about that, but decided it would be too pathetic.
And if this tale of an 'extended universe' really is true - and if it's CANON
- then it ties the whole thing to our own history, since IIRC it features the present day ancestors of the Raige family.
Still, it could be a time loop! Meaning: Kitai and Cypher are swept back in time and crash on prehistoric Earth. I have a theory like that about BSG - both versions.
Also, I think it would be totally hilarious if the Earths of After Earth
turn out to be the same.