The term "pulsating universe" refers to a cosmological model in which the universe expands and contracts rhythmically in a cyclic manner. Synonyms for this term may include "cyclic universe", "oscillating universe", "recurring universe" and "repeating universe". These terms imply that the universe undergoes a perpetual cycle of expansion and contraction, with each cycle being identical to the last. Other possible synonyms for this concept might include "cycling universe", "revolving universe", or "rotating universe", which imply a similar sense of perpetual motion and renewal. Regardless of the terminology used, the idea of a pulsating universe speaks to a fundamental human need to find patterns and repetitions in the natural world, and to seek meaning in the cycles of life and death.