How does the sound work to effectively create an “other worldly” sound mix that we can relate to in our “real world”?

How does the sound work to effectively create an “other worldly” sound mix that we can relate to in our “real world”?
Discuss the score in Star Wars – A New Hope and how it supports/propels the narrative.
Make your own topic: identify an aspect of sound in Star Wars – A New Hope, how it functions to support the film, and why you feel it is worthy of analysis.