Worm holes are an exotic concept, about as real as time travel. I have and will always maintain that we need to change our paradigm completely and stop thinking about interstellar travel like we do about intercontinental. To fly to another star is a one way journey. Not just for any individual, but for the species. Once we send the colonists to Aldebaran, we must do that without any expectation of ever hearing back from them. In a way, colonizing the galaxy would be like a flu epidemic. The viruses in your nose make you sneeze in the hope to get expelled and reach a new host. Some of them may indeed reach it but most of them will inevitably die. And none of them will ever come back. But despite the great losses, the strategy is beneficial to the species. @endso, that wouldn't work. However you rename it, the worm has already been out of the hole (so to speak), so there will always be someone to remind the others that "interstellar space-time portal" or whatever was once known as "wormhole", And the jokes will live on.