Ancient Alignment

What this lesson shows

• The equinox defines the starting point used to measure the yearly cycle.

• That starting point is treated as zero. This zero point is useful because it provides a consistent reference for dividing and tracking the cycle. But that zero does not remain fixed among the stars.

• Over long periods, the equinox slowly drifts through the stellar background.

• This drift is caused by the gradual change in the direction of Earth’s axis.

• The yearly measuring system remains intact even while its stellar backdrop changes.

• This is the point at which Pisces at the equinox becomes visible as a historical condition, rather than a permanent rule.
  
  

How to use the controls

• 🔈 Speak / Stop: Play or Stop narration.