Great ice age
A significant period of glaciation took place on the world of Csilla, a planet, approximately around the year 5000 BBY.
Sources
- " The University of Sanbra Guide to Intelligent Life: The Chiss " — Star Wars Gamer 5 (First mentioned)
- Alien Anthology
- The Official Star Wars Fact File 137 (CHI 1-4: Chiss)
- The Complete Star Wars Encyclopedia , Vol. I ("Csilla")
- The Essential Atlas (First identified as great ice age)
- The Unknown Regions