Thursday, February 18, 2010

Incredible - sonic boom destroys a sun dog

I had seen several posts about this event but, until R2K posted it, I hadn't taken a peek. Big mistake.  This is got to be the coolest video I've seen this year.

Solar Dynamics Observatory Launch, Feb 11, 2010 HD VERSION A sun dog is a prismatic bright spot in the sky caused by sun shining through ice crystals. The Atlas V rocket exceeded the speed of sound in this layer of ice crystals, making the shock wave visible from the ground. The announcer can be heard in the video saying, "The vehicle is now supersonic."