Your astrological sign is determined by the position of the sun on the day you were born, so that means everything you thought you knew about your horoscope is wrong.

Ancient Babylonians had 13 constellations, but wanted only 12, so threw out Ophiuchus, the snake holder. Libra didn’t even enter the picture until the era of Julius Caesar.

NASA recently revealed that there are actually 13 zodiac signs, and now everything you ever knew about your horoscope has changed.

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