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Pilot

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Two pilots are needed to fly the rocket plane from the time it’s released from the mothership to shoot into space until it glides down to a runway.

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Called sleep inertia, it happens when you suddenly snap out of REM sleep — a deeper stage of sleep where you dream and your body repairs itself. During that sleep cycle your body is flooded with high levels of melatonin, the body's sleep hormone. Waking with a body packed full of a sleep aid causes disorientation and shaky sensory-motor performance that typically lasts about 30 minutes to an hour.

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