SpaceX's Falcon 9 rocket and Dragon spacecraft wait for liftoff at Launch Complex 39A at NASA's Kennedy Space Center in Florida.

SpaceX's Falcon 9 rocket and Dragon spacecraft wait for liftoff at Launch Complex 39A at NASA's Kennedy Space Center in Florida.

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A First For SpaceX: Sending A Used Rocket Into Space

The private space exploration company -- headed by Tesla CEO Elon Musk -- plans to launch another mission to space on Thursday at 6 pm ET out of Cape Canaveral in Florida. But this mission has the potential to be historic. That's because this is the first time SpaceX will reuse a rocket that has already traveled to space and then returned safely to Earth.