How to spot the Perseid meteor shower, a summer light show that promises to dazzle

The Perseid meteor shower promises a summer light show, with visibility peaking Wednesday night and continuing into Thursday morning under promising viewing conditions. Meteors, which can range from 30 to 100 per hour, are caused by Earth passing through debris left behind by comet 109P/Swift-Tuttle. Optimal viewing requires dark skies away from city lights, especially when the moon is in its new moon phase.