ULA scrubs Atlas V launch of spy satellite from Cape Canaveral

The United Launch Alliance (ULA) has scrubbed Wednesday's Atlas V launch.

Issues were noted hours before launch regarding a ground valve issue with the liquid oxygen system. This put a hold on the launch countdown. 

Teams were reportedly dispatched to the launchpad in Cape Canaveral, putting a delay on the planned 5:54 p.m. liftoff time.

At 5:49 p.m., ULA officially scrubbed the launch.

This the second time the space company has pushed back the launch of its Atlas V rocket, carrying a military satellite. It was originally planned for Election Day but was pushed to Wednesday.

ULA tweeted that the rocket was rolled out to the launch pad, but experienced "an upper payload environmental control system flow rate reduction," causing engineers to take time and troubleshoot the problem.

ULA says that they will attempt the launch again in 48 hours. 

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On Thursday, SpaceX plans to launch its Falcon 9 rocket from Cape Canaveral. The launch has been scrubbed several times already and when it actually does lift off, it will carry a satellite for the U.S. Air Force. The launch window opens at 6:24 p.m.

Tune in to FOX 35 Orlando for the latest along the Space Coast.