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There are models of two related universes that e.g. attempt to explain the baryon asymmetry – why there was more matter than antimatter at the beginning – with a mirror anti-universe. [ 78 ] [ 79 ] [ 80 ] One two-universe cosmological model could explain the Hubble constant (H 0 ) tension via interactions between the two worlds.
Parallel universes in fiction, a hypothetical self-contained plane of existence, co-existing with one's own Alternate history , a genre of fiction in which historical events differ from reality Alternative universe (fan fiction) , fiction by fan authors that departs from the fictional universe of the source work
The Hidden Reality: Parallel Universes and the Deep Laws of the Cosmos is a book by Brian Greene published in 2011 which explores the concept of the multiverse and the possibility of parallel universes. It has been nominated for the Royal Society Winton Prize for Science Books for 2012.
The theory contains the evolutionary ideas of "reproduction" and "mutation" of universes, and so is formally analogous to models of population biology. Alternatively, black holes play a role in cosmological natural selection by reshuffling only some matter affecting the distribution of elementary quark universes.
Alternate reality (or Alternative reality, UK English) often refers to parallel universes in fiction, a self-contained separate world, universe or reality coexisting with the real world, which is used as a recurring plot point or setting used in fantasy and science fiction. Alternate reality may also refer to:
The physical universe is defined as all of space and time [a] (collectively referred to as spacetime) and their contents. [10] Such contents comprise all of energy in its various forms, including electromagnetic radiation and matter, and therefore planets, moons, stars, galaxies, and the contents of intergalactic space.
The multiverse is a series of parallel universes in many of the science fiction and fantasy novels and short stories written by Michael Moorcock [1] [2] [3] [4] (many ...
Earth Prime (or Earth-Prime) is a term sometimes used in works of speculative fiction, most notably in DC Comics, involving parallel universes or a multiverse, and refers either to the universe containing "our" Earth, or to a parallel world with a bare minimum of divergence points from Earth as we know it — often the absence or near-absence of metahumans, or with their existence confined to ...