[youtube=http://www.youtube.com/watch?v=litgdI5_1Uo] Since the zodiac periods were established millennia ago, the moon’s gravitational pull has made the Earth “wobble” around its axis in a process called precession. That has created about a one-month bump in the stars’ alignment. The result? “When [astrologers] say that the sun is in Pisces, it’s really not in Pisces,” said Kunkle, a…