Less than one hundred years ago astronomer Edwin Hubble first discovered that the Milky Way is not the only galaxy in the universe. Today, scientists believe that there are roughly one hundred billion galaxies. Hard to imagine the universe has grown one hundred billion times its size since 1919. Now that astronomers have billions upon billions of galaxies to deal with, they are now forming more specified criteria for what makes a galaxy. Well, astronomers Duncan Forbes and Pavel Kroupa are asking you to help them out with this galaxy defining dilemma. Vote now! This article will provide more information on why galaxies are undergoing some dictionary scrutiny.