There are other UNIVERSE - why cant there be other then ours ?

She is in a group that is speculating. It will be a long time to either prove or disprove the facts of the theory. Note, the void or hole that was discovered is only 8 billion light years from us, so under that theory, we are only 8 billion light years from the edge of the Universe. Note further, this hole is only 25-45 percent less dense than most of other space.