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Our best look at likely interstellar comet Borisov so far


Here's a two-color composite image of C/2019 Q4, which could be the first interstellar comet ever identified. Blue and red dashes are images of background stars that appear to streak due to the motion of the comet. 

Astronomers have spotted what's believed to be just the second known interstellar object ever discovered. And now a telescope on Hawaii's Mauna Kea has taken the clearest color image of the vagabonding comet so far. 

Comet Borisov, or C/2019 Q4, as it's more formally known, likely came from somewhere beyond our solar system and is currently set ...


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