Comet C/2014 UN271 Bernardinelli-Bernstein

Astronomers Thrill at Giant Comet Flying into Our Solar System – Scientific American

The internet is bubbling with news stories about comet C/2014 UN271 (Bernardinelli-Bernstein). Current size estimates are that the comet is about 100-370 km across – much bigger than the previous size winner, Hale-Bopp in 1997 at 60km. There are big uncertainties at the moment, with C/2014 UN271 some 20 AU away. Those uncertainties will narrow,Continue reading “Astronomers Thrill at Giant Comet Flying into Our Solar System – Scientific American”