In a dramatic turn of events in Cape Canaveral this morning, the SpaceX Falcon 9 rocket launch was aborted at T minus 0.5 seconds. The launch countdown actually reached zero, and the engines visibly ignited before being cut off. The abort was blamed on an excessive pressure reading in the fifth of the rocket's nine engines, which caused the onboard computer to automatically shut down the launch. The next launch window for SpaceX will be this Tuesday at 3:44 AM EDT, and the company's founder Elon Musk tweeted that the necessary adjustments will be made ready for a "countdown in a few days."