A babyverse, also known as a baby universe or basement universe, is a small artificially-created universe linked to the parent universe by a wormhole. This could then be used for living space, computing, or as an escape from a decaying universe.

A babyverse is a hypothetical concept in physics and cosmology. It refers to a self-contained region of space that exists within our own universe, but is separate and distinct from it. Some theories suggest that babyuniverses may be created through the process of cosmic inflation, in which a small patch of space expands rapidly, creating a separate, self-contained region within the larger universe. It is also possible that babyuniverses could be created through the collapse of a black hole, or as a result of other physical processes. However, the existence of babyuniverses is still purely theoretical and has not been proven through empirical evidence.