Circum-Desert Polar Orbit

There is a planet with life in the polar orbit of a gas giant. It tells the history of the development of civilization spanning thousands of years. The tentative timeline includes celestial voids, abnormal stellar activities, desert star lighthouses, gravitational tides... Note: The cosmic background is the beginning of the second volume of "Cradle Civilization", and there are spoilers. Essentially a side story of Cradle of Civilization.