WEBVTT

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George Diller/SDO Launch Commentator:  T minus 10... nine... eight... seven... six... five... four... "go" for main engine start...

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three... two... one... zero... and ignition...

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and liftoff of a the Atlas V with the Solar Dynamics Observatory, learning why our star is changing our lives.

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(Rumbling)

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Rob Gagnon/Launch Vehicle Telemetry Manager:  coming up on going into closed loop control and Atlas PU.

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And return to closed loop control on Atlas utilization.

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Pressure's continuing to look good. Mission operating pressure's continue to look good.

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Flight control data is smooth as expected for this portion of atmospheric flight. Coming up on Mach 1.

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And the vehicle is now supersonic. Approaching max dynamic pressure. Everything is looking good.

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And we are hitting Max Q. VU is controlling as expected. Operating as expected. Everything looking good.

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And the vehicle continues right down the 
center of the range track.

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We are 12 miles in altitude, 11 miles downrange, traveling at 2,300 mph.

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