A new study casts more doubt on the supposed success of an interstellar fishing expedition.
On Jan. 8, 2014, a space rock about 1.6 feet (0.5 meters) wide exploded over the western Pacific Ocean. In 2019, Harvard astronomer Avi Loeb and his colleague Amir Siraj determined that the intruder came from outside our solar system, a conclusion backed three years later by U.S. Space Command.
