“Oumuamua may be a fully operational probe sent intentionally to Earth vicinity by an alien civilization”
“The theory is based on the object’s “excess acceleration,” or its unexpected boost in speed as it traveled through and ultimately out of our solar system in January 2018.”
“Considering an artificial origin, one possibility is that 'Oumuamua is a light sail, floating in interstellar space as a debris from an advanced technological equipment,” wrote the paper’s authors, suggesting that the object could be propelled by solar radiation." -BBCNews