Incandescence
Greg Egan
 The novel has two narratives in alternate chapters. The first follows two citizens of the Amalgam, a Milky Way-spanning civilisation, investigating the origin of DNA found on a meteor by the Aloof. The Aloof control the galactic core and until the novel begins, have rejected all attempts at contact by the Amalgam. The second narrative is set on a small world known as the Splinter, and covers the attempts by its inhabitants to understand the environment within which their home exists. As the story progresses, it becomes clear that the Splinter orbits a collapsed star within its accretion disk and is subject to various dangers. The two stories come together in a complex twist which involves a kind of past/future first contact role reversal. Much of the narrative explores the effects of orbital dynamics around a high mass object and requires an understanding of Newtonian gravitation and at least a basic familiarity with general relativity and its application to black holes and neutron stars to be compelling. Understanding the story's wider frame of reference and the Splinter's encounter with the Wanderer are tied in with this. The Amalgam is explored in two other short stories, "Glory" and "Riding the Crocodile".