> It’s the date that determines parts of her personality, her passions, her romantic interests and, to some degree, her life decisions. One day it came to be from a female colleague during a fun meeting. The vibe was too good to be disturbed, so I just skipped all birthday hoops and told her my star sign is Orion, then I asked her to search online if she wanted to know the attributes. My fellow nerds, remember, we ha…
If you're going to criticize astrology on astronomical grounds, you should at least learn enough of the astronomical basis of astrology to understand how to criticize it.
In this case, there's 12 astrological signs because the ecliptic passes through 12 constellations. (Actually, there's an interesting discussion about Ophiuchus, but this is where it's helpful to know that the constellations aren't well-fixed in divided space, IAU's process of doing so notwithstanding, and for astrological purposes, the ecliptic is instead divided into 12 equal-sized regions, each one labeled with a constellation)