Snapshots from Atlas 5 launch

New video released by the Russian space agency Thursday shows the moment a Soyuz rocket ran into trouble around two minutes after liftoff with a two-man crew Oct. 11, when one of the vehicle’s four first stage boosters crashed into the Soyuz core stage.

The United Launch Alliance Atlas 5 rocket lifted off from Cape Canaveral at 8:37 a.m. EDT (1237 GMT) today to deploy a classified satellite in service to the national security of the United States. Follow the mission in our live journal.

The rollout operation on Tuesday followed a day of evaluations using Boeing’s weight and center-of-gravity machine to determine the final measurements on the spacecraft. Launch is still targeting May 6 at 10:34 p.m. EDT (0234 UTC).