You are correct!
From our dictionary:
em•py•re•an (em"pu-rE'un, -pI-, em-pir'E-un, -pI'rE-), —n. the highest heaven, supposed by the ancients to contain the pure element of fire. the visible heavens; the firmament.
About Infoplease, Part of Family Education Network
© 2000–2015 Pearson Education, publishing as Infoplease