The Serpent Bearer

NASA spacecraft are monitoring an interstellar wind coming from the constellation Ophiuchus.

Science@NASA -- Every year in early December, something happens that can throw your horoscope out of whack. The sun enters Ophiuchus, the little-known 13th house of the zodiac.

You've probably heard of Capricorn, Aquarius, Pisces, Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio and Sagittarius. The sun passes through these constellations, one by one, throughout the year. They're the ancient signs of the zodiac.

But Ophiuchus?

Modern astronomers don't divide the sky the same way ancient astronomers did. According to modern star maps, the sun cuts through a 13th constellation, Ophiuchus the Serpent Bearer, between Nov. 30th and Dec. 17th. Astrologically speaking, if you were born between those dates you're no longer a Sagittarian, you're an Ophiuchi! But that's another story....