Aliens SHOCK: ET could have ALREADY visited Earth, Nasa scientist claims ALIENS have already visited Earth and humans missed their arrival, a Nasa scientist said. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:SpaceX docking: Crew Dragon capsule docks TODAY - how to watch LIVESpaceX launch: How to watch the SpaceX Crew Dragon live stream againEngland to Offer Hospital Patients Free Sanitary ProductsSpaceX Dragon capsule completes ISS docking in major breakthrough for NASA space programmeZhores Alferov, Russian Physicist and Nobel Prize Winner, Dies at 88NASA Mars mission: Could underwater LAKES be proof of ALIEN LIFE on Mars?