It's been about one month since the heavens over Santa Clarita opened up with a roar and revealed - something. It's still not absolutely clear what caused such a commotion at about 8:30 p.m. May 4. Initial reports referred to a "jet doing doughnuts," according to a complaint filed with Edwards Air Force Base, and to "two jets" according to several e-mails to The Signal. After a month of probing, the skies over Santa Clarita Valley appear a little more cluttered than first thought. Scientists at the Jet Propulsion Laboratory confirm bits of Halley's Comet appear every year at this time, from the end of April to the end of May, peaking around May 6. Read more