firmament (FUR-muh-ment) noun
The sky; the heavens.
[From Latin firmamentum (sky) from firmare (to support). Ultimately from the Indo-European root dher- (to hold firmly or support) that is also the source of firm, affirm, confirm, farm, and fermata.]
"The brightest stars in the goss-mag firmament have fallen cripplingly to earth."
-- Jacqueline Maley; What the Gossip Mags Say; The Sydney Morning Herald (Australia); Jan 11, 2005.