As if I need another project that won't get enough attention...
I've read that the wormhole was made by Rhythm & Hues. They might have used Wavefront Dynamation or their own software.
But I've never found an in-depth article on its creation, or even screen grabs.
Since I like to choose projects no one else is doing, I started analyzing the sequence frame by frame and thinking how the wormhole might have been created - which led me to see if I could approximate it without using particle simulations.
Pretty sure it was done with multiple simulations & some textured vortex geometry all composited together. The growth and shrinking as it appears and disappears looks to just be scaling it up and down.
Plenty more to do, but this IS the Work in Progress section. Gotta fix the terrible camera move and work on animating it bursting to life. I also want to do what the show never did and go THROUGH the opening and into the tunnel in one unbroken shot.