Approximately once every 45 million years a long period comet strikes the Earth with catastrophic results.  Astronomers have identified and calculated orbits for more than 25 comets which have passed less than 40 times the Moon’s distance from us prior to the year 1900. There is the possibility of a Leonid meteor storm in mid November from 2021 to 2031 as the Earth passes through the debris left behind from Comet  55P/Tempel-Tuttle.  Find a natural night sky location like the Cosmic Campground in New Mexico and check it out for yourself.