Science Questions

My wife and I were walking through a park in the evening. Suddenly, a light shot across, hovered over us and then shot away at a speed you wouldn't believe. There was no sound whatsoever. Graham

(Nick) This is fascinating because this is the fourth call this evening in which the craft was silent and showed amazing flexibility in movement. The lack of sound is quite common, and a low frequency hum is also often described.

December 2004