I picked up on this quite some time ago but was again reminded of it by this article. It’s one of those cases where an SF writer got it right before the astrophysicists proved it. I’m guessing that some of you have read Larry Niven’s book? Remember why the Pierson’s Puppeteers were moving their entire solar system out of the galaxy?

I was sure I first read about it as a serious scientific theory about six years ago, and this National Geographic article seems to confirm that, whereas I’m fairly sure (correct me if I’m wrong) Niven was writing about this sort of stuff back in the early 70s. Quite likely he took the idea from some speculative articles knocking round at the time, but still…