On Wednesday, SpaceX will launch a secret mission to space. 

The Elon Musk-founded spaceflight company is expected to launch a secret government payload known only as Zuma atop a Falcon 9 rocket at around 8 p.m. ET on Wednesday.

Once the secret mission is safely on its way to orbit, the first stage of the Falcon 9 will come back down to Earth, landing on a pad back in Cape Canaveral, Florida about 10 minutes later.

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