The Risa system is a star system in the Milky Way galaxy, which once safely sustained a Tok'ra base under the command of Malek. A Goa'uld attack by Anubis in this system compelled the Tok'ra to flee for Earth, but they were forced to divert to the Alpha Site. (SG1: "Allegiance")

- Risa is a reference to Star Trek's pleasure planet.

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