I just noticed this little gem:
Quote:
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9 and 43: Any type of engine that is capable of lifting the LEM of of the lunar surface and can produce thrust on a sandy surface such as the Moon’s will at least leave scorch marks or heat up the ground.
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The part about being able to 'produce thrust on a sandy surface' would suggest that CosmicDave is so naive in his knowledge of physics that he believes the rocket requires something to 'push' on to produce thrust. It is hard to take his claims seriously when he makes such fundamental mistakes.