The ancient Babylonians believed the movements of the planets and stars were omens predicting the future, prompting them to track patterns in the night sky. They established the Western zodiac signs 2,500 years ago by naming the constellation behind the sun each day from Earth’s perspective. However, the constellations no longer align as they did 25 centuries ago. For instance, 2,000 years ago, September 16 was in Virgo, but today it is in Leo.

The Earth spins like a wobbling top, causing our view of the stars’ positions to shift by one degree every 72 years. Since Babylonian times, this has resulted in a nearly 35-degree change. Our current view of the constellations today will not be seen again for 2,600 years.

The Babylonians originally identified 17 zodiac constellations but reduced the number to 12 to match the number of months in their calendar year. However, the slices of the night sky are unequal. The sun spends twice as long in front of Virgo as in front of Cancer. This change also excluded Ophiuchus, which, when combined with Scorpio, only appears in front of the sun for a week. It may be time for astrologers to reconsider the zodiac signs