In 2017 and 2018, three comets will pass near the Earth. Their names are 41P/Tuttle-Giacobini-Kresak, 45P/Honda-Mrkos-Pajdusakova, and 46P/Wirtanen. Astronomers call them "41P", "45P", and "46P", for short. At closest approach on April 1, 41P was only 56 times farther from Earth than the Moon. 45P was even closer at 31 lunar distances when it flew by on February 11. And 46P approaches 30 lunar distances, on December 16, 2018. Read more
Spoiler
Ed ~ Comet 46P/Wirtanen passes between the Hyades and Pleiades on the 16th December 2018