Disinformation purposely released for the public to believe. I personally believe aliens are not what they appear to be. Jacques Valleé and J. Allen Hynek both agree and they were the top UFOlogists in their day. They studied thousands of cases and came to the conclusion that these things are hostile because they pretend to be something they are not. Furthermore they fly millions of light years to earth just so they can make amazing maneuvers while flying in the air, occasionally abduct people, and preach New Age doctrine. How likely is that?
Speaking of amazing maneuvers, we've seen ufo's making right angle turns while going thousands of miles per hour, that's just not possible. These things are not material.
Aliens are demons.