Nemesis
Isaac Asimov
 The novel is set in an era in which interstellar travel is in the process of being discovered and perfected. Before the novel's opening, "hyper-assistance", a technology allowing travel at a little slower than the speed of light, is used to move a reclusive space station colony called Rotor from the vicinity of Earth to the newly discovered red dwarf, Nemesis. There, it takes up orbit around the semi-habitable moon, Erythro, named for the red light that falls on it. It is eventually discovered that the bacterial life on Erythro forms a collective organism that possesses a form of consciousness and telepathy (a concept similar to the Gaia of Asimov's Foundation series). While the colonists argue over the direction of future colonization — down to Erythro, or up to the asteroid belts of Nemesis system — events catch up to them. Back on Earth superluminal flight is perfected, ending Rotor Colony's isolation and opening the galaxy to human exploration. The story also relates the breakup and reunion of a family (the mother, the discoverer of Nemesis, and the daughter were separated from the Earthbound father when the colony departed; the father becomes part of the hyperjump research project as a result); the startling discovery that the bacterial inhabitants of Erythro, collectively, constitute a sentient and telepathic organism; and the discovery and resolution of a massive crisis: Nemesis' trajectory threatens to gravitationally destabilize the Solar System.