Is it far-fetched? Of course! But right now, cosmologists are trying to figure out if there’s a group of multiple universes running parallel to each other—and whether they might be habitable.
Margaret and Geoffrey Burbidge, discuss their work, the Universe, the space program and God. This clip is from The Cosmologists. BBC Archive: Originally broadcast 12 March 1963.
Modifying the standard model of cosmology to allow for a curved universe could help ease confusion between cosmologists who calculate different ages of the Universe, based on different experiments.