A Harvard paper is arguing that a cigar-shaped interstellar object, now named Oumuamua, is possibly an alien probe sent to investigate earth. The name means "a messenger that reaches out from the distant past" in Hawaiian.
Researchers at the Harvard Smithsonian Center for Astrophysics wrote that "Oumuamua may be a fully operational probe sent intentionally to Earth vicinity by an alien civilization." Critics, including Alan Jackson, a fellow at the Centre for Planetary Sciences at the University of Toronto Scarborough, argue that it's a from a binary star system, or a system with two stars.
