Space.com #Comet Swift-Tuttle: The Icy Parent of the Perseid Meteor Shower 9 August 2016 fborgosano Leave a comment Share: The spectacular Perseid meteor shower, peaking Thursday night (Aug. 11–12), lights up Earth’s sky every August as Earth passes through the trail left by Comet Swift-Tuttle, a miles-wide behemoth that swings by Earth every 133 years. from Space.com ift.tt/2aHzAfY Share: