EditorialImages of the Comet C/2014 UN271, now confirmed as the the largest comet ever discovered, with a core more than 80 miles across. (NASA, ESA, STScI via The New York Times)
EditorialImages of the Comet C/2014 UN271, now confirmed as the the largest comet ever discovered, with a core more than 80 miles across. (NASA, ESA, STScI via The New York Times)