Back in the 40's Isaac Asimov wrote a short story called Nightfall. It was adapted a couple of times for the Old Time Radio show X-Minus One and Dimension X, which is where I head it, on the Sirus XM classic radio channel. I dont know if it's usable as a Star Wars game, but it seemed like a pretty cool background event for the players to encounter.
The nutshell is this: What would happen if people saw the stars only once every two thousand years?
Asimov created the planet Lagash where there are six suns and perpetual daylight. With no nighttime, the stars cannot be seen and therefore are not known. Astronomical science has not yet reached the point of being able to look beyond the suns. The concept of darkness is mysterious and frightening.
The scientists at Saro University are predicting a total eclipse of all the suns at once. They are aware, based upon archaeological studies, that civilization seems to have been destroyed about every two thousand years, the same time period of the occurrence of the eclipses. If the two are related, will the darkness once again cause a hysteria that will destroy the world?
As the scientists prepare for calamity, they are joined by a newspaper reporter, and all hope to save future generations from fear through a record of factual knowledge. However, a religious cult is also predicting the phenomenon as a judgment against evil.
So imagine the player as traders, landing on Lagash just before the Nightfall. The natives have contact with the outside universe, but the general population tends not to wrap their brains around the concept of Outer Space. Or they can process it on a logical level but on the deeper psychological level, the absence of light triggers a basic, primitive response. The planet freaks out despite their best efforts.
And they have to cut a deal, perform a transaction or rescue someone while the collective planet loses it **** minds. That could be . .. . interesting.
Here's the original radio play if you want to check out the full story: