Fictional representations of Mars have been popular for over a century. Interest in Mars has been stimulated by the planet's dramatic red color, by early scientific speculations that its surface conditions might be capable of supporting life, and by the possibility that Mars could be colonized by humans in the future. Almost as popular as stories about Mars are stories about Martians engaging in activity (frequently invasions) away from their home planet.
In the 20th century, actual spaceflights to the planet Mars, including seminal events such as the first man-made object to impact the surface of Mars in 1971, and then later the first landing of "the first mechanized device to successfully operate on Mars" in 1976 (in the Viking program by the United States), inspired a great deal of interest in Mars-related fiction. Exploration of the planet has continued in the 21st century on to the present day.
Before the Mariner 4 spacecraft arrived at Mars in July 1965 and dispelled some of the more exotic theories about the planet, the conventional image of Mars was shaped by the observations of the astronomers Giovanni Schiaparelli, Camille Flammarion and Percival Lowell. Flammarion assumed its red surface came from red-colored vegetation, and Schiaparelli observed what he took to be linear features on the face of Mars, which he thought might be water channels. Because the Italian for channels is canali, English translations tended to render the word as "canals", implying artificial construction. Lowell's books on Mars expanded on this notion of Martian canals, and a standard model of Mars as a drying, cooling, dying world was established. It was frequently speculated that ancient Martian civilizations had constructed irrigation works that spanned the planet in an attempt at saving their dying world. This concept spawned a large number of science fiction scenarios.
The following works of fiction deal with the planet itself, with any assumed Martian civilization as part of its planetary landscape.