What is another word for astronomical years?
Pronunciation: [ɐstɹənˈɒmɪkə͡l jˈi͡əz] (IPA) 
There are several synonyms for the term "astronomical years". One of the most common phrases used is "cosmic years", which is often used to describe the length of time it takes for galaxies to form or the age of the universe. "Geological years" is also a related term, which is used in reference to the geological history of Earth and the considerably shorter timescales involved. Another synonymous phrase for astronomical years is "galactic years", which is used when discussing the rotation of the Milky Way and other galaxies. Finally, "celestial years" is another term that is sometimes used to describe the length of time it takes for stars to form and evolve.
