Sunday, February 21, 2010


Sonic Boom Meets Sun Dog 720p (via beachton123)


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.”