What phenomenon causes the traditional zodiacal dates to drift away from the actual stellar constellations they were originally named after?
Answer
Precession
Precession, which is a slow wobble in Earth's axis, causes the intersection points (equinoxes) to shift slowly over time, leading to the drift of the traditional dates relative to the fixed constellation boundaries.
#Videos
The Ecliptic: Crash Course Kids #37.2 - YouTube
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