It looks like you're referencing , titled "The Eye." This is widely considered one of the most visually stunning and tense episodes of the series, focusing on the high-stakes heist on Aldhani during a spectacular celestial event. Since you asked for "a piece," The Eye of Aldhani
If you are looking for the "look" of this episode for a project or wallpaper, it is characterized by: Lush, foggy highlands.
"There is a growing weight of an Imperial need over the galaxy. It is universal. It is constant. It is everywhere. We've been asleep, but the Empire has been busy... Freedom is a pure idea. It occurs spontaneously and without instruction." Visual Inspiration