Mars takes approximately two years to orbit the sun (twice as long as the Earth), and he only turns retrograde about once every two years for about 80 days. The last time Mars was retrograde was October and November 2005. During that time Mars was retrograde in the methodical sign of Taurus, which generated some "bullheaded" behavior. This time he will be traveling in the sensitive sign of Cancer and then back into the scattered sign of Gemini.