Source : Webster's Revised Unabridged Dictionary (1913)

Astrolatry \As*trol"a*try\, n. [Astro- + Gr. ? service, worship:
   cf. F. astrol[^a]trie.]
   The worship of the stars.

Source : WordNet®

astrolatry
     n : worship of planets or stars [syn: {worship of heavenly
         bodies}]