Falcon 9 Launch Delayed

The Falcon 9 rocket is transported to the launch pad on Dec. 2. (Credit: SpaceX)

The first Falcon 9/Dragon flight has been delayed from Tuesday until later this week because of a potential problem in a nozzle weld on the second stage, SpaceX President Gwynne Shotwell said during a press conference today. The earliest launch date is Thursday, but the flight could slip to Saturday if engineers must replace the nozzle.