Call it what you will, this video, with this particular music, gives me goose bumps!

The official explanation, like many official government explanations, does quite fit what we are actually seeing.

I agree M.S.

This second video is longer and has better, more detailed pictures. The music is good too.

It is much more affective if you click on the You Tube logo and go there to watch it, clicking the rectangular button in the bottom right area as soon as you get to You Tube to see it in full screen mode.