'Stellias' in the 'World of Caellus' story are massive stars who are orbited by 120,000 galaxies each. They are made of one of the sacred holy elements (Etheraminium) and are often confused with super massive quasars.
Music wise, Stellias was originally debuted in 'Genesis' the album, and now it is being released as a single with a great selection of remixes, but some of the best new bloods in the scene.
Music speak more than a million words, judge yourself. ;)