A test for multiple universes finds four . . . maybe [Mad Science]
04
Aug
Multiple universes are accessed, in fiction, through portals in space or mystical necklaces or sometimes just in dreams, but always when characters break the rules of space time. In reality, alternate universes are not in other dimensions. They're just far, far away. And the reason they are alternate universes is that they can't be reached no matter what. But can they be tested for? More »