Complex sentence: There is a sponge analogy used often that compares a sponge to the pattern of clusters of galaxies in the universe-the holes are the voids and the other parts are the locations of the superclusters.
Split into simpler sentences: There is a sponge analogy used often that compares a sponge to the pattern of clusters of galaxies in the universe. The holes are the voids and the other parts are the locations of the superclusters.