You may have heard about a story circulating around the internet about astrology being wrong. In short, an astronomer named Parke Kunkle talked to the Minneapolis/St. Paul Star-Tribune about how astrology’s dates bear little relation to actual positions of the constellations and that there is a 13th constellation that isn't included. It doesn’t seem like he intended it to be big news, but it made quite an impact on the internet all the same; doing a Google News search for "astrology" turns up hundreds of articles on the topic.
If you are like me and don’t pay any attention to astrology, this did come as a revelation: why wouldn’t a system with the prefix “astro-“ and using the names of constellations have to do with the positions of the stars?