Confirmed: Comet Borisov Is Another Interstellar Visitor

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 ,