Friday 12 March 2010
Atlas V Rocket Exceeded The speed of Sound!
Solar Dynamics Observatory Launch, Feb 11, 2010
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."
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