This is the 20th day of the Gaian year. On this day chapter 20 of the Gaiad is read, telling the story of Late Heavy Bombardment Sagittarius 20 - Chapter 20 of 364 This chapter continues the eukaryotic evolution story, showing Euka's reflection on his cellular organelles, then tracing the genealogical expansion through five generations to the emergence of the four major eukaryotic kingdoms: Plants, Fungi, Protists, and Animals.