Interstellar Comet 2I/Borisov - What We Know So Far

In late Sept. 2019, the International Astronomical Union (IAU) confirmed that Comet 2I/Borisov is not from around here. Learn more about the 2nd object found to be of interstellar origins: https://www.space.com/interstellar-comet-borisov-looks-normal.html

Credit: Space.com / produced & edited by Steve Spaleta http://www.twitter.com/stevespaleta