1. Meeting or interaction with a UFO

1. Facts or information proving something

2. Unidentified Flying Object

3. Protective barrier around a UFO

4. Thin, shiny metal often associated with UFOs

5. Site of alleged UFO crash in 1947

6. Unknown or unexplained event

7. Extraterrestrial beings

8. Emit a soft light

9. Rate of movement

10. Path followed by a UFO around a celestial body

11. Person who controls a flying saucer

12. Operating without making noise

13. Force that allows an object to rise

14. Circular objects resembling saucers

15. Spin around an axis

16. Lighter-than-air aircraft

17. Fourth state of matter

18. Sudden overwhelming fear or anxiety

19. Sign or evidence of a UFO's presence

20. Sudden impact causing damage