An artificial sun functioned as an imitation of a sun. One example of this type of technology was present within the subterranean cavern located at the Mitth family's homestead on Csilla, the capital planet of the Chiss Ascendancy. This artificial sun replicated the rising and setting behavior of Csilla's sun.
The novel Thrawn Ascendancy: Chaos Rising, published in 2020 and the initial book in Star Wars: The Ascendancy Trilogy by Timothy Zahn, featured an artificial sun.