Complex sentence: It is much larger than the more famous Southern Cross consisting of the brightest stars in Cygnus, Deneb, Sadr, Gienah, Delta Cygni and Albireo.
Split into simpler sentences: It is much larger than the more famous Southern Cross. It consists of the brightest stars in Cygnus, Deneb, Sadr, Gienah, Delta Cygni and Albireo.