uranology
/ˌjʊərəˈnɒlədʒi/ /ˌjɔːrəˈnɒlədʒi/(also ouranology)
noun
1The study of the stars or the heavens; astronomy. Also: a treatise or discourse on this subject; an astronomical system. Now chiefly historical.
2 Theology. Doctrine concerning heaven.
Origin
Mid 18th century; earliest use found in Benjamin Martin (bap. 1705, d. 1782), lecturer on science and maker of scientific instruments. From urano- + -logy. Compare post-classical Latin uranologia, ouranologia, Middle French, French uranologie, Portuguese uranologia.