Climate of Mars cold while those in the North are short and warm. It is now thought that ice accumulated when Mars' orbital tilt was very different from what it is now. (The axis the planet spins on has considerable "wobble," meaning its angle changes over time.) A few million years ago, the tilt of the axis of Mars was 45 degrees instead of its present 25 degrees. Its tilt, also called obliquity, varies greatly because its two tiny moons cannot stabilize it like our moon. Many features on Mars, especially in the Ismenius Lacus quadrangle, are thought to contain large amounts of
Mars in culture in film. The theme of a Martian colony that fights for independence from Earth is a major plot element in the novels of Greg Bear as well as the movie "Total Recall" (based on a short story by Philip K. Dick) and the television series "Babylon 5". Some video games also use this element, including "Red Faction" and the "Zone of the Enders" series. Mars (and its moons) were also the setting for the popular "Doom" video game franchise and the later "Martian Gothic". Mars in culture Mars in culture is about the planet Mars in culture. For example, the