Explainer: What are Perseid meteor showers?

The Perseid meteor showers, visible every August, originate from the debris of Comet Swift-Tuttle. This comet, first observed in 1864, orbits the Sun every 133 years and is the largest object to approach Earth repeatedly, aside from the moon. The comet's debris field causes meteors when fragments enter Earth's atmosphere. The best time to view the Perseids is during their peak on August 12 at 2:00 AM EDT.

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