Deletion of Plateau (Known space)

Comment: The usual refrain for these fiction articles: nothing but |in-universe |plot details, no real-world |notability and no |sources. I've looked on Google and Google Books, and all I can find is a single passing mention in a sci-fi encyclopedia
Stance: delete
Cited policy: Wikipedia:Manual of Style (WP:INUNIVERSE||WP:PLOT||WP:N||WP:RS)