Systems "GO" one hour from 8:23 a.m. launch

Live: Refresh this page for periodic updates and the latest still image from launch complex 17 at CCAFS. Click on the picture for a larger view. You can also click here to play United Launch Alliance's live video feed in a 2nd smaller window (broadcast starts at 8 a.m.).

The countdown for the 8:23 a.m. EDT launch continues, with slight improvement in the weather.

"We're trending in a positive direction," said United Launch Alliance spokesman Jessica Rye.

Earlier, the weather had been 60 percent "no go", but one hour from launch had reversed to 60 percent "go."




















ULA photo of the rocket right after rollback.