Complex sentence: Elliptical galaxies do not have disks around them, although some bulges of disk galaxies look similar to elliptical galaxies.One is more likely to find elliptical galaxies in more crowded regions of the universe (such as galaxy clusters).
Split into simpler sentences: Elliptical galaxies do not have disks around them, although some bulges of disk galaxies look similar to elliptical galaxies. It is more likely to find elliptical galaxies in more crowded regions of the universe (such as galaxy clusters).