'Wow!' Signal Was...Wait For It...Comets

Comets get blamed for everything. Pestilence in medieval Europe? Comets! Mass extinctions? Comets! Even the anomalous brightness variations in the Kepler star KIC 8462852 was blamed for a time on comets. Now it looks like the most famous maybe-ET signal ever sifted from the sky, the so-called "Wow!" signal, may also be traced to comets. Say it ain't so! In August 1977, radio astronomer Jerry Ehman was looking through observation data from the Ohio State's now-defunct Big Ear radio telescope gath...