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SpaceX’s first Falcon Heavy rocket was loaded with propellants Saturday at Kennedy Space Center’s launch pad 39A, as engineers make progress preparing for a hold-down engine firing, and eventually liftoff of the huge commercial launcher.

Spaceflight Now members can watch a live video feed of pad 39A as the Falcon Heavy is prepared for a test-firing. Become a member today to support our coverage and receive exclusive content.

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