by Denise Chow, SPACE.com
In a double weekend treat, one of the most well-known and reliable meteor showers — the Perseid meteor shower — will reach its peak overnight Friday (Aug. 12) as the International Space Station flies across the sky above many U.S. cities.
The annual Perseid meteor shower returns this week, but is expected to hit its peak activity in the overnight hours of Friday and Saturday (Aug. 13). While the full moon of August may interfere with the meteor display, the best time to catch the pretty light show (weather permitting) is during the predawn hours, especially on Saturday morning, experts at NASA advise.
And if you're looking skyward before dawn this week, you might also be able to glimpse the space station overhead. [Photos: Amazing Perseid Meteor Shower Displays]
NASA is inviting the public to participate in a Perseids webchat and "all-night" meteor shower viewing party, hosted by astronomer Bill Cooke and his team from NASA's Marshall Space Flight Center in Huntsville, Ala. The webchat will begin at 11:00 p.m. EDT (0300 GMT) on Friday (Aug. 12) and will last until 5:00 a.m. EDT (0900 GMT) on Saturday (Aug. 13).
The Perseid meteor shower occurs every year as Earth passes through a stream of dust particles and debris from the Comet Swift-Tuttle. As these specks of comet dust hit the top of Earth's atmosphere at speeds of up to 140,000 miles per hour (225,000 kilometers per hour), they are heated and form bright meteor streaks that can be seen across the sky.
These meteors stream out of the constellation of Perseus, which is how the meteor shower got the name "Perseids." [Top 10 Perseid Meteor Shower Facts]