The dwarf irregular galaxies may be from cloud fragments that did not get incorporated into larger galaxies. (astronomynotes.com)
An astronomer studying small irregular galaxies discovered a remarkable feature in one galaxy that may provide key clues to understanding how galaxies form and the relationship between the gas and the stars within galaxies. (public.nrao.edu)
It is immediately obvious that there are very few spiral galaxies, and no bright irregular galaxies. (atlasoftheuniverse.com)