A Leonid meteor streaks across the sky over Valley of Fire State Park,
about 65 miles northeast of Las Vegas, Nevada in this four-minute
camera exposure in the early morning hours of November 19, 2002. The
meteor shower is a result of the earth's orbit passing through debris
from the comet Temple-Tuttle. The light show is caused by small pieces
of the comet burning up as they hit the atmosphere at over 160,000 mph.
The meteor shower is visible every mid-November and gets its name from
the fact that the meteors appear to radiate from a point in the
constellation Leo. REUTERS/Ethan Miller

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