Alien life visited our solar system in Oct 2017, suggests Harvard astronomer

Harvard Astronomy professor Avi Loeb has argued in his new book that the simplest and best explanation for the highly unusual characteristics of an interstellar object that sped through our solar system in October 2017 is that it was alien technology. The object named 'Oumuamua slingshotted around the Sun and then sped up and deviated from the expected trajectory.