Falcon 9
Live coverage: SpaceX countdown at Vandenberg aborted at T-minus 3 seconds
SpaceX aborted a countdown at Vandenberg Space Force Base in California at T-minus 3 seconds Thursday, delaying the launch of a Falcon 9 rocket with the first set of 10 missile tracking and data relay satellites for the U.S. military’s Space Development Agency. SDA said Friday there won’t be another launch attempt Friday as teams resolve issues discovered during Thursday’s aborted countdown.