re: My philosophy is *all existence* is full circle...
The expansion of our universe works in the same way. :)
Energy expelled from stars (living or dying in the form of novas and supernovas) and gravity have a great deal to do with it. Stars die and give way to new stars and even planets... galaxies collide and give way to new galaxies and star birth, etc.
As for 2001 A Space Odyssey, the only thing I learned from that sci-fi is not to put my full trust on a computer. :} Other than that it was, ok (as sci-fi goes).