Albedo
Definition
Albedo is the proportion of incoming light that a celestial body reflects. In astronomy, it is a physical measurement of reflectivity rather than an astrological factor by itself.
Astrological Meaning
Older astrologers sometimes speculated that a planet’s reflective qualities might correspond symbolically with temperament or style of expression. The Moon and Mercury were occasionally associated with changeability, while brighter planets such as Venus were connected with stronger visible radiance.
Why It Matters
Albedo is useful when reading historical astrology texts that combine astronomical observation with symbolic interpretation. It also helps distinguish between light emitted by a body and sunlight reflected from its surface.
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