 Stars and planetary systems in fiction

The planetary systems of stars other than the Sun and the Solar System are a staple element in many works of the science fiction genre.The notion that there might be inhabited extrasolar planets can be traced at least as far back as Giordano Bruno who, in his "De l'infinito, universo e mondi" ("On the Infinite, Universe and Worlds", 1584), declared that "There are then innumerable suns, and an infinite number of earths revolve around those suns, [These worlds are inhabited] if not exactly as our own, and if not more nobly, at least no less inhabited and no less nobly."