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I am a YA science fiction writer - not a scientist. This will be apparent by my question. Could...


a rocket be equipped with two scramjets? One to take an unmanned rocket out of Earth orbit and the second to propel the rocket to, say, Mars, and so cut down on the seven months' travel time? How many scramjets would be needed to lift a payload of, say, one ton, beyond Earth orbit?

 

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Hi-Jinks says

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