What is another word for island universes?
Pronunciation: [ˈa͡ɪlənd jˈuːnɪvˌɜːsɪz] (IPA) 
The phrase "island universes" refers to galaxies that are millions of light-years away from Earth and are located outside of our Milky Way galaxy. Other terms used to describe these galaxies include extragalactic systems, external galaxies, and simply galaxies. These synonyms highlight the fact that these islands of stars and cosmic debris are distinct entities in their own right, separate from the billions of stars that make up our home galaxy. Galaxies can vary greatly in size, shape, and composition, and studying them can provide important insights into the nature of the universe and the fundamental laws that govern it.
