NASA

NASA, the most famous and biggest space organization knows everything about aliens. It has a great contact with aliens and has many Top Secrets hidden. One witness is that when Neil Armstrong, the first person to step on the moon when there, he left some clues of their visit in some way that told the date and related information of the visit which meant for Aliens. As NASA is in America, which is one of the favorites of Aliens to visit at, most alien incidents occur in America. NASA says "We will be connected to aliens within 20 years" officially in newspapers and media. NASA provides help to aliens also. NASA is also a very secret research center.