Comet Borisov is the second known celestial object to visit our solar system from deep space
This story was originally published on CBC News. To read the rest of this news worthy story, please visit https://www.cbc.ca/radio/quirks/dec-14-saving-the-ozone-helped-climate-change-extra-solar-comet-great-auk-extinction-and-more-1.5391393/an-interstellar-visitor-could-be-lighting-up-for-astronomers-in-time-for-the-holidays-1.5391411?cmp=rss.