‘The presence of a wormhole would actually solve a major problem of galaxy formation. In recent years, astronomers have observed what appear to be supermassive black holes at the centre of many galaxies. Indeed, many believe that supermassive black holes are necessary for galaxies to form in the first place— they provide the gravitational pull to hold galaxies together in their early stages.
But if that’s true, how do supermassive black holes become so massive so quickly? After all, the one at the centre of our galaxy must have been in place about 100 million years after the Big Bang. That doesn’t leave much time to grow.
A wormhole, on the other hand, is a primordial object formed in the blink of an eye after creation. So if wormholes did form in this way, they would be present in the early universe to trigger the formation of the first galaxies.’ (The Physics arXiv Blog — Medium).