Confirmed: Comet Borisov Is Another Interstellar Visitor : v

HowStuffWorks takes a look at the second interstellar visitor to come tumbling our way through from the galaxy.

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California , United States , Mauna Kea , Hawaii , Gennady Borisov , Davide Farnocchia , Karen Meech , University Of Hawaii , International Astronomical Union , Propulsion Laboratory In Pasadena , Gemini Multi Object Spectrograph , Gemini North Telescope , International Astronomical , Oort Cloud , Propulsion Laboratory , William Herschel Telescope , Canary Islands , Gemini North ,