This artist’s rendering shows the first interstellar asteroid: ‘Oumuamua. This unique object was discovered on Oct. 19, 2017 by the Pan-STARRS 1 telescope in Hawaii. The University of Toronto’s Alan Jackson reported Monday, March 19, 2018, that the asteroid — the first confirmed object in our solar system originating elsewhere — is probably from a binary star system. That’s where two stars orbit a common center. According to Jackson and his team, the asteroid was likely ejected from its system as planets formed. (M. Kornmesser/European Southern Observatory via AP)
CAPE CANAVERAL, Fla. — Our first known interstellar visitor likely came from a two-star system.