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NASA astronomers have just confirmed the size of the new largest comet to be ever seen by humanity. Say hello to C/2014 UN271, more commonly known as the Bernardinelli-Bernstein comet.

Rhode islandUnited statesLos angelesPedro bernardinelliDavid jewittDavid morrisonGary bernsteinAlyssa pagan stscNational geographicUniversity of californiaNational aeronauticsSpace administrationHui macau university of scienceMan to huiMacau universityAlyssa pagan