Astrochemistry refers to the study of chemical elements and compounds in outer space. It is a relatively new field of science, and as such, there are not many direct synonyms for it. Some related terms include astrobiology, which examines the origins and evolution of life forms beyond Earth, and astrogeology, which investigates the geological features and processes of other celestial bodies. Additionally, chemical cosmology is a related field that studies the role of chemistry in the creation and evolution of the universe. While these terms are not direct synonyms, they share similar themes and subject matter with astrochemistry.