The vast ever-retreating cosmos can be referred to using various synonyms, each capturing a different aspect of its immense grandeur. One might call it the infinite universe, emphasizing the boundlessness of its expanse. Alternatively, it could be described as the eternal cosmos, highlighting its timelessness and enduring nature. For those who are awed by its complexity, it may be called the intricate multiverse, hinting at the existence of countless parallel universes. Other synonyms include the vast expanding universe, alluding to its ongoing growth and development, and the cosmic expanse, evoking its immense size and scale. Whatever term one chooses, the cosmos remains a profound mystery and a symbol of humankind's endless quest for knowledge.