Perseid meteor shower

The night sky over a beach in Cancun is pictured August 12, 2010. Star-gazers will be hoping for clear skies overnight on Thursday when one of the year's most spectacular meteor showers reaches its climax. The Royal Astronomical Society said debris from the Swift-Tuttle comet will burn up in the Earth's atmosphere, creating between 60 and 100 shooting stars every hour. [Photo/Agencies]