The Physics of Rick and Morty

For science fiction, the multiverse is a gold mine of compelling story ideas. But how could we prove or disprove it? Some physicists like Kleban believe we could detect evidence of the multiverse through something called bubble collisions. If the edges of two universes crashed into each other in the distant past, a signature imprint would be left behind in the sky. The hunt for bubble collisions continues, although Kleban himself has acknowledged finding one would be a long shot. "If convincing evidence of the multiverse is found, it would be one of the biggest discoveries in human history akin to the Copernican revolution," he said.