August brings one of the year's most famous and enjoyed meteor shower – the Perseid Meteor Shower. Hundreds of star lovers from across the Pacific Northwest are expected to attend OMSI's biggest star show of the year. The event, sponsored by OMSI, the Rose City Astronomers, the Vancouver Sidewalk Astronomers and Oregon Parks and Recreations will have telescopes set up for attendees to use. Jim Todd, OMSI's planetarium manager, will be presenting informal talks about the meteor shower, constellations, and the summer sky.
The Perseid Meteor Shower occurs when the Earth enters the path of debris left by the comet Swift-Tuttle in its last trip past the Sun. Swift-Tuttle follows a highly eccentric orbit around the Sun with an orbital period of about 130 years. The comet last passed by the Earth in December 1992.
This strong annual shower can produce 20 to 60 meteors an hour, though because of the light pollution and other factors, "many are too faint to see with the naked eye," Todd said. "Still, an observer in a dark subdivision can hope to see few meteors on the peak nights. This year the New Moon will not be a factor during the prime meteor-watching until the early morning. Under these conditions, you will see a Perseid or two each minute."
Rooster Rock State Park is located 22 miles east of Portland on I-84 at exit 25. The event is free, and there is a $3 per vehicle parking fee for public.
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