SpaceX postponed the first launch from NASA’s Kennedy Space Center since the last shuttle flight in 2011, due to concerns about a control system on the Falcon 9 rocket’s second stage.
The Falcon 9 had been due to loft a robotic Dragon cargo capsule into orbit from the center’s Launch Pad 39A in Florida, delivering 5,500 pounds worth of supplies and experiments for the International Space Station.
But with less than 20 seconds left in today’s countdown, SpaceX’s mission managers decided they needed more time to work through a nagging technical issue with the controls for the second stage’s rocket engine nozzle..
