<Ul> <Li> Shape of the universe </Li> <Li> Galaxy filament Galaxy formation </Li> <Li> Large quasar group </Li> <Li> Large - scale structure </Li> <Li> Reionization Structure formation </Li> </Ul> <Li> Shape of the universe </Li> <Li> Galaxy filament Galaxy formation </Li> <Li> Large quasar group </Li>

How do the types age & arrangement of galaxies fit into galaxy clusters