Scientists say mysterious 'Oumuamua' object could be an alien spacecraft

Harvard researchers raise the possibility that it may be "a fully operational probe sent intentionally to Earth vicinity by an alien civilization."
Read more: https://www.nbcnews.com/mach/science/scientists-say-mysterious-oumuamua-object-could-be-alien-spacecraft-ncna931381?cid=sm_npd_nn_fb_ma?source=Snapzu