I was goofing around with some software, seeing if a certain filter gave a random or the same effect each time. Turns out it was random.
When it generated this, I knew it was the one. If you look carefully, maybe with the fullsize image, you can make out a face in the circle. To me this looked like someone peeking thru a wormhole. Not that we can do that now. Not in a controlled or coordinated way. But sometime in the future, who knows..?