They’re chatting about this over on the Classics list:
Most of the chat is about whether Bellum Stellarum is an appropriate translation of ‘Star Wars’ … Bellum Stellarum, of course, literally means ‘War of the Stars’ … Ralph Hancock suggested De bellis sidereis, which seems a bit better, perhaps. I always thought ‘Star Wars’ in English was kind of a silly title to begin with …
rogueclassicism 
De bello siderali