A Mars return occurs when the planet moves through the entire zodiac and returns to the degree it was when you were born. This takes approximately 2 years, so we all have a Mars return quite often in the span of our lifetime. In astrology, Mars represents our assertion, drive, energy, masculine aspects, he’s the gas in our tank. Often he’s put in the box of representing our anger and sexuality. He’s those things too, but as in all things in astrology, he’s much more.