April 27, 2009
Ophiuchus is not part of the astrological zodiac because it first appeared in sky maps long after the Babylonians created the 12 signs and named them after constellations recognized at that time.
The region of the sky associated with the astrological sign Scorpio includes stars from both Scorpius the Scorpion and Ophiuchus the Serpent Bearer. Surprisingly, the Sun spends more time in Ophiuchus even though it’s not among the 12 constellations of the astrological zodiac.
Photo by Astronomy: Roen Kelly
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