There are 28 galaxies that are known to be inhabited in the Smallville universe.
- Clark: Who are you?
- Raya: Raya. Not that names matter here.
- Clark: Where is 'here,' exactly?
- Raya: Jor-El created this place to hold criminals from the 28 known inhabited galaxies.
- Clark: So, it's a prison? That makes you... an inmate.
- Raya: I may be trapped here, but I'm not one of the prisoners.
- Season Six, Zod
- Jor-El: (to Zod) The Orb is ready. And so are these... the Stones of Knowledge. The teachings of the 28 galaxies will be available to our people, if ever they are resurrected.
- Season Nine, Kandor
- In Superman: The Movie, Jor-El tells Clark that "The total accumulation of all knowledge spanning the 28 known galaxies is embedded in the crystal which I have sent along with you."