SpaceX was quick to make the point that the ability to carry on despite an engine failure demonstrates a big advantage of multi-engined rockets like the Falcon (Space Shuttles and Saturn V moon rockets could both do something similar).

ECONOMIST: SpaceX goes to the ISS

At 180 feet tall and 12 feet in diameter, the Falcon 9 rocket is tiny in comparison to the football-field-long Saturn V rockets that carried Apollo spacecraft into orbit.

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