SpaceX aborted the historic launch of its Dragon spacecraft to the International Space Station on Saturday at the last second because of a rocket engine glitch.

The launch would the first attempt to send a private spacecraft to the space station. SpaceX and NASA officials say the next launch attempts could come Tuesday or Wednesday in the early morning hours at NASA's Kennedy Space Center.

As the countdown reached zero, the engines began firing - but then shut down, NASA and SpaceX officials said.

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