Why did your zodiac sign change? We asked the astronomer who started it allCharlie Jane Anders1/13/11 5:04pm6543EditInvite manuallyPromoteDismissUndismissHideGo to permalinkThe internet is burning up with the news that the zodiac has been rearranged. There's a 13th sign, Ophiuchus, and people who think they're Virgos are actually Leos. What happened here? We talked to the astronomer who caused the fuss.