‘This Is Clearly Coming From Outside the Solar System’

Marina Koren
‘This Is Clearly Coming From Outside the Solar System’

Astronomers around the world are monitoring an interstellar comet hurtling through the solar system, known for the moment as C/2019 Q4. It was mysterious enough that some astronomers even began to consider whether it was dispatched by an advanced alien civilization. This second interstellar object was spotted in late August by Gennady Borisov, an amateur astronomer in Crimea.