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The spacecraft was launched on an Air Force-Convair Atlas intercontinental ballistic missile coupled to Thor-Able upper stages including an Able x 248 rocket third stage, on November 26, 1959.

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The spacecraft was launched on an Air Force-Convair Atlas D intercontinental ballistic missile coupled to Thor-Able upper stages including a Hercules ABL solid propellant third stage.

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The spacecraft was launched on an Air Force-Convair Atlas D intercontinental, ballistic missile coupled to Thor-Able upper stages including an Able solid propellant third stage.

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