The peak viewing period for the annual Perseid meteor shower occurs this weekend. Dozens of meteors may be visible to the naked eye at certain times. They're the result of Earth passing through a debris field from the Swift-Tuttle comet.Eastern Kentucky University physics professor Marco Ciocca says it’s not the only time meteors and other space material make their mark over Kentucky. “On any given day there is all kind of stuff falling from the sky. It falls all the time. We see very few, because the majority burn before we can see anything and especially if they fall during the day. Astronomers say the best time to see the Perseid shower is between midnight and dawn.