What is another word for cosmic stepping stone?
Pronunciation: [kˈɒzmɪk stˈɛpɪŋ stˈə͡ʊn] (IPA) 
"Cosmic stepping stone" refers to a celestial object or occurrence that serves as a catalyst or milestone for the advancement of knowledge or technology in space exploration. Synonyms for this term might include "celestial springboard," "astral launchpad," "cosmic gateway," or "interstellar waypoint." Other similar phrases might include "stellar catalyst," "galactic milestone," or "cosmic turning point." Regardless of the term used, these expressions all describe significant events or entities in space exploration that have propelled humanity's understanding of the universe forward and paved the way for further discovery.
