High Quality Content by WIKIPEDIA articles! Comet Swift-Tuttle is a comet that was independently discovered by Lewis Swift on July 16, 1862 and by Horace Parnell Tuttle on July 19, 1862. The comet made a return appearance in 1992, when it was rediscovered by Japanese astronomer Tsuruhiko Kiuchi and became visible with binoculars. Its solid nucleus is about 27 kilometers across, considerably larger than the 10-km object hypothesized to have wiped out the dinosaurs in the Cretaceous–Paleogene extinction event. It is the parent body of the Perseid meteor shower, perhaps the best known shower and among the most reliable in performance.

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