re: Meanwhile in the Mojave, "the Roc" is almost ready to fly

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Um, I don't think you can use jet engines in space. They need to take in air in order to produce thrust.

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I think the Roc is the carrier vehicle to get everything into the upper atmosphere.

The space payload will be in the Orbital Sciences-built Thunderbolt

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The three-stage Thunderbolt rocket will be carried aloft for launch mounted beneath the wing center section.

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