The Age of Aquarius is a time looked forward to by astrologers and others as heralding a New Age for humanity. It will occur when 'the moon is in the seventh house, and Jupiter aligns with Mars', but no one knows exactly when this rare phenomenon is going to occur. According to these beliefs, we are currently in the Age of Pisces, the fish, in other words the age of Christianity which started in 1 AD. There are twelve ages in all, each lasting for roughly 2000 years or more, and they have the same names as the 12 astrological signs of the year. In comparison to them, however, they appear to run backwards, because of the precession of the equinoxes. Hence Aquarius follows Pisces, and not the other way round.