Most often astrology tattoos refer to the zodiac or constellation that are centered around earth. There are a total of twelve constellations and images all of which have their own story and birthday associated with it (also see Zodiac Tattoos - http://www.girl-tattoos.com/Zodiac_Tattoos.php)
With so many believers in astrology, zodiac tattoos are rightly very popular as they play a major influence in peoples daily lives . While most know their astrological sign in the stars, many don't know their corresponding element which can add some personalization to your design. It's important to do your research with an astrology tattoo, make sure to customize it and make it your own.
The belief in the stars and astrology has existed for thousands of years. As the ancients gazed up at the sky long ago, so will onlookers as you sport this superstitious and fun tattoo.