Earth.

Plain old, no bells and whistles, life-as-we-know-it Earth.
Earth as it is and as it always has been--but not as it always will be.

Just as the Earth is not flat, but instead round, the universe is not one, but many.
As time marches ever onward, the evidence against a divided multiverse continues to stack up...if only we could remember.

Where only yesterday we buried shelters for fear of MADness, today we raise shining steel against a darkening sky.
Perhaps tomorrow we'll seed new stars before some prehistoric monster stamps out our last surviving ancestor.