Comet Swift-Tuttle: What to know
air-and-space” target=”_blank”>Comet Swift-Tuttle< once. It is a large comet, with a nucleus about 16 miles across. According to NASA Science, the comet – also known as 109P – last reached its closest approach to the sun in 1992 and is expected to return again in 2125. The comet was discovered in 1862 independently by both…