Respuesta :
They forming clusters that are light years away from other clusters is
what best describes how galaxies exist in the universe.
What is a Galaxy?
Galaxy comprises of stars and interstellar matter which are gravitationally
bound together in the universe.
They exist in the universe as clusters and are far away from the Earth
which is why tyhey are viewed as small substances. They are light years
away from other clusters and help in illumination during the night time.
Read more about Galaxy here https://brainly.com/question/13956361