The SpaceX Falcon 9 and Dragon module, loaded with half a ton of provisions for the International Space Station did not lift off.
SpaceX Falcon 9 was set to lift off from Cape Canaveral on May 19, to take half a ton of provisions to the ISS, and was meant to become the first private-made vessel to perform such a task.
The countdown was almost complete and the engine ignition sequence almost started, when the on-board computers halted the process automatically.
A report on the SpaceX website states, "Today, SpaceX aborted the launch of the Falcon 9 rocket and Dragon spacecraft. Due to the instantaneous launch window, we are not able to recycle and re-attempt the launch today.