
Massive Comet from Oort Cloud Exhibits Jets as It Approaches Earth
A giant comet, C/2014 UN271 (Bernardinelli-Bernstein), the largest ever detected from the Oort Cloud at 137 km wide, is approaching the inner Solar System and has exhibited active jets of carbon monoxide, providing new insights into its behavior as it nears Earth, with closest approach in 2031, though it won't be visible to the naked eye.

