Flag of Mars Flag of Mars A flag of Mars is a flag or flag design that represents the planet Mars or that represents a fictional Martian government. Science fiction authors have, for literary purposes, described the flags of fictional Martian governments. Some of the readers of those flag descriptions have created flags or flag images that are based on the authors’ descriptions. Flag images for two fictional Martian governments are presented in this article. Advocates of the exploration and settlement of Mars have designed, manufactured, and sold Mars flags, sometimes with the hope that their designs may one day be adopted and
Definition of planet to 400 astronomical units from the star. A Mars-mass body at the orbit of Pluto clears its orbit. This metric, which leaves Pluto as a dwarf planet, applies to both the Solar System and to extrasolar systems. Some opponents of the definition have claimed that "clearing the neighbourhood" is an ambiguous concept. Mark Sykes, director of the Planetary Science Institute in Tucson, Arizona, and organiser of the petition, expressed this opinion to National Public Radio. He believes that the definition does not categorise a planet by composition or formation, but, effectively, by its location. He believes that a Mars-sized or