The setting created by George Lucas by the block buster Star Wars movies. Made famous by the original movie trilogy:
Episode 4 - A New Hope
Episode 5 - The Empire Strikes Back
Episode 6 - Return of the Jedi
Subsequently George Lucas expanded the setting through another trilogy, and animated TV series and movies. There are also a myriad of books, comics and console games set in this very popular and instantly recognisable universe.