The War of the Worlds is a science fiction novel by English author H. G. Wells. It was written between 1895 and 1897, and serialised in Pearson's Magazine in the UK and Cosmopolitan magazine in the US in 1897. The full novel was first published in hardcover in 1898 by William Heinemann. The War of the Worlds is one of the earliest stories to detail a conflict between humankind and an extraterrestrial race. The novel is the first-person narrative of an unnamed protagonist in Surrey and his younger brother who escapes to Tillingham in Essex as London and southern England is invaded by Martians. It is one of the most commented-on works in the science fiction canon.

Scientific romance is an archaic, mainly British term for the genre of fiction now commonly known as science fiction. The term originated in the 1850s to describe both fiction and elements of scientific writing, but it has since come to refer to the science fiction of the late nineteenth and early twentieth centuries, primarily that of Jules Verne, H. G. Wells and Arthur Conan Doyle. In recent years the term has come to be applied to science fiction written in a deliberately anachronistic style as a homage to or pastiche of the original scientific romances.