According to physicist Max Tegmark, there are at least four distinct meanings of “the multiverse”. All are to modern physics as “the aether” was to pre-relativistic physics: theoretical constructs ...

Multiverses are so hot right now. The idea of a limitless number of parallel dimensions, spinning off from every decision everyone makes, is a household idea and has been at the centre of several ...

There may be another universe just a millimeter away from ours, hovering in an extra, hidden dimension. At any moment this second universe (or “membrane,” in M-theory—a relative of superstring theory) ...

Andre Lapiere: Are there only three dimensions in other universes or could there be more? Michio Kaku: Andre, we believe, though we cannot yet prove, that our multiverse of universes is 11-dimensional ...