Roostan

Roostan is a fictional location appearing in the science fiction novel "Dune" by Frank Herbert. It is a moon of the planet Arrakis, also known as Dune. Roostan is depicted as a harsh and arid world, much like Arrakis itself, though it is not a significant player in the novel's primary narrative. Its primary importance lies in its role as a celestial body within the Dune universe.

The moon is mentioned in relation to the planet Arrakis and its orbital mechanics. In the context of the story, the moons of Arrakis, including Roostan and its companion Krip, are important for understanding the planet's environment and its unique cycles. The presence of these moons influences the tides and weather patterns on Arrakis, particularly the colossal sandworms that inhabit the planet.

Roostan itself is not extensively described, and its inhabitants, if any, are not detailed in the novel. Its existence serves to enrich the background of Arrakis, providing a more complex and believable planetary system. The scientific and astronomical details of the Dune universe, including the moons of Arrakis, contribute to the immersive quality of Herbert's world-building. Roostan remains a minor but integral part of the established lore of Dune.