LAKE MEAD NRA, NV - AUGUST 12:  A Perseid meteor streaks across the sky early August 12, 2008 near Rogers Spring in the Lake Mead National Recreation Area, Nevada. The meteor display, known as the Perseid shower because it appears to radiate from the constellation Perseus in the northeastern sky, is a result of Earth's orbit passing through debris from the comet Swift-Tuttle. Tuesday morning was considered the peak of the shower, which is visible every August.  (Photo by Ethan Miller/Getty Images)