The Leonids meteor shower is an annual celestial event that occurs every November. It is caused by the Earth passing through the debris left by the comet Tempel-Tuttle. As these tiny particles enter the Earth's atmosphere, they burn up and create bright streaks of light in the sky. The Leonids are known for their fast meteors, traveling at speeds of about 71 kilometers per second. While the shower typically produces around 10 to 15 meteors per hour, it can occasionally experience outbursts, resulting in hundreds of meteors visible in a single hour.