Dan Sylveste is a fictional character from the science fiction novel series called Revelation Space by author Alastair Reynolds. He is a brilliant but troubled scientist who becomes obsessed with uncovering the mysteries of the universe, particularly the ancient alien race known as the Inhibitors. His quest for knowledge often leads him into dangerous situations and moral dilemmas. Throughout the series, Sylveste's character explores themes of ambition, sacrifice, and the consequences of knowledge. His interactions with other characters, such as Ana Khouri and The Prefect, highlight the complexities of human relationships in the face of existential threats. Sylveste's journey is central to the overarching narrative of the Revelation Space universe.