The atmosphere above the surface of Mars is about 100 times less dense than the atmosphere of Earth. The Martian atmosphere is dense enough to support a weather system that includes clouds and winds. According to experts, Mars' roller coaster-like weather is more chaotic and unpredictable than scientists first thought. At times, the sky can appear pink and cloudless, filled with windblown dust raised from the rusty Martian surface. Tremendous dust storms sometimes rage over the entire planet. Most of the dust storms occur during the perihelion - when Mars is closest to the sun. …
