Close Encounters
Speaking of alien abductions, there are actually different classifications for the kinds of alien abductions that people have claimed to experience. The scale is known as the “close encounter” scale, and the first of these is the most common. It is when someone sees a UFO around 500 meters away.
For the second kind, witnesses see the UFO have some sort of physical effect on another object. The third kind involves people seeing some occupants of the UFO, whether it’s aliens or robots. The fourth kind is abduction, whereas the fifth kind is contact between humans and aliens. If you ask me, they’re all terrifying!