CNN: The private space firm plans to try its unmanned mission to the international space station again at 9:38 am ET on Sunday. by Jackie Wattles and Amanda Barnett
'SpaceX decided to halt its launch plans Saturday in order to "take a closer look at positioning of the second stage engine nozzle," the company tweeted.
'The delay comes after founder Elon Musk tweeted concerns about a small leak in the rocket's upper stage on Friday. That issue appeared to be resolved Saturday morning.
'Musk said Saturday "all systems" were go except for the engine nozzle issue.'