Liftoff of the Falcon 9 rocket, its Dragon capsule filled with food, supplies and science experiments, had been scheduled for 4:55 a.m.

CNN: Private space travel: A new era begins?

The flight will be scrubbed for at least three days if the company's 18-story Falcon 9 rocket and teardrop-shaped Dragon capsule aren't ready.

WSJ: SpaceX's Pioneering Flight Plans

The company successfully developed its own launch vehicle, the Falcon 9 rocket, and its own spacecraft, called the Dragon.

FORBES: SpaceX Struggles, But Remains On Track To Space Station