'Alien' asteroid discovered orbiting the wrong way near Jupiter 

An "alien" asteroid from another star system has been discovered sharing Jupiter's orbit.  Through a telescope the asteroid look like every other in the solar system save for one crucial difference - it is travelling in the wrong direction. It is the first time an interstellar space rock has been found to be permanently residing in the solar system.  Earlier this year, a tumbling cigar-shaped object named 'Oumuamua', hit the headlines after flying into earth's galactic backyard, but it