The planet Mars has a tricolor flag Bashny.Net

Flag of Mars - has no official status flag, which is endorsed as the flag of the planet Mars-profit organization for the development of Mars - Mars Society (Mars Society), and The Planetary Society (The Planetary Society). It can not be an official in the legal sense of the word, as the Outer Space Treaty prohibits the appropriation of celestial bodies by any means.

At present, the flag flying over Mars Fleshinskoy Mars Arctic Research Station on Devon Island, Canada, and at some sites of the town Mars Desert Research Station in Utah, USA. The flag has also been sent into space - he was taken into orbit US astronaut John Mace Gransfeldom during space flight 1999 shuttle "Discovery».



The flag depicts the future history of Mars: the red stripe symbolizes Mars as it is today; green and blue symbolize the stages of the possible development of the world of humanity, if it is to have the desire and opportunity to do so. The colors of the flag and its value is based on the famous trilogy of Kim Stanley Robinson's "Mars Red", "Green Mars", "Blue Mars».

via factroom.ru