The moon had a very turbulent atmosphere with frequent storms. Lightning and giant clouds constantly raged over the surface.
In 22 BBY, during the Clone Wars, the Confederacy of Independent Systems built the Skytop Station and positioned it in the atmosphere of the Ruusan moon. Anakin Skywalker and Ahsoka Tano infiltrated the station on a mission to retrieve the stolen R2-D2. The station was eventually destroyed after they had completed their mission.
- The Clone Wars: Prelude (First appearance)
- Star Wars: The Clone Wars – "Ambush" (Appears in flashback(s))
- Star Wars: The Clone Wars – "Downfall of a Droid" (Mentioned only)
- Star Wars: The Clone Wars – "Duel of the Droids"
- The Complete Star Wars Encyclopedia (As "Ruusan moon")
- Star Wars: The Clone Wars: The Official Episode Guide: Season 1 (First identified as Ruusan 2)
- The Art of Star Wars: The Clone Wars
- The Essential Atlas
- The Official Star Wars Fact File Part 47 (RUU5–6, Skytop Station)