Swift-Tuttle is a comet that orbits the Sun approximately every 133 years. It was discovered in 1862 by two astronomers, Lewis Swift and Hermann Goldschmidt. This comet is notable because it is the parent body of the Perseid meteor shower, which occurs every August when Earth passes through the debris left behind by Swift-Tuttle. The comet is large, measuring about 26 kilometers in diameter, and its orbit brings it close to Earth. In 1992, scientists calculated that Swift-Tuttle has a small chance of colliding with our planet in the future, making it an object of interest for astronomers and space agencies.