Antikythera Mechanism Older Than My Mother

In a startling piece of scientific revelation, the Antikythera Mechanism has been "determined" to be as old as 50 B.C.

Previous estimates presumed this proud piece of scientific engineering to be at least 50 years older than this revised estimate.

The mechanism was used as an astrological tool to help the scientists of the day calculate and estimate astronomical events and the Olympic Games schedule, according to THIS article.   

I had not heard of this piece of old-school (re-found by searchers in 1901) technology prior to this article but its sure nice to know there's always more to learn about.