Something Weird is Happening with the Interstellar Comet 2I/Borisov

Comet 2I/Borisov first caught skywatchers’ attention in late August 2019 when it was officially discovered whizzing through the Solar System on a trajectory that indicated an interstellar origin. This month, astronomers checking in on the object found that something weird was happening. A team based in Poland reported that twice in March so far, Comet Borisov had brightened up. As it zooms away from the Sun, it has been spotted spewing out material in two cometary outbursts. These outbursts show that the