Strange asteroid becomes first known resident alien of our solar system

Most asteroids orbit the Sun in the same direction as the planets. However, Asteroid 2015 BZ509 orbits the opposite direction. This leaves scientists to believe that this asteroid is from outside our solar system, making it the first known permanent res
Published: 8:39 PM EDT May 23, 2018
Updated: 8:48 PM EDT May 23, 2018