Answer the following question: Celestial Matters -  Celestial Matters is a science fantasy novel set in an alternate universe with different laws of physics written by Richard Garfinkle and published by Tor Books in 1996. It is a work of alternate history and meticulously elaborated alternate science as the physics of this world and its surrounding cosmos are based on the physics of Aristotle and ancient Chinese Taoist alchemy. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
Answer:
Written Work