pocket universe
Bubble of existence
A pocket universe is a self-contained cosmos existing separately from our own, often smaller in scale or with different physical laws.
The concept appears in science fiction and theoretical physics, describing universes that might be artificially created, naturally budded off from a parent universe, or accessible only through specific means: The wizard's tower existed in a pocket universe outside normal space.
In fiction, pocket universes often serve as hidden realms, prison dimensions, or personal domains.
- pluriverseMultiple coexisting realities
- microcosmMiniature representation of larger whole
- parallelEquidistant at all points
- bubbleAir-filled film sphere
- self-containedWhole without external parts
closed system · Doctor Who · imagination · thought experiment · simulation theory · manifold · solipsism · world · topology · infinite regress · possibility · galaxy · science fiction · independent · spacetime · ontology · time loop · wormhole
- other realmsotherworld, netherworld, spirit world, shadow realm, dream realm
- parallel worldsparallel worlds, alternate reality, parallel dimension, alternate world, other dimension
- Alternate Universesalternate timeline, parallel earth, multiverse, Earth-2, mirror dimension
- multiverse conceptsparallel worlds, alternate dimension, alternate realities, branching timeline, parallel dimensions
- cosmosgalaxies, galaxy, stars, star, planets
- Cosmic Inflationslow roll, exponential growth, reheating, preheating
pocket universemultiverse
Hypothetical set of universes
infinite universe · macrocosm · omniverse · observable universe · cosmos
pocket, universe, pockets, pocketed, pocketing, pocketful, pocketbook, universal, universally