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Yes, Apollo 11 had humans on the first actual landing but they previous Apollo missions included "dress rehearsal" flights that did almost everything but touch down. It was not just launch and land the first time with people. Incremental steps along the way. https://en.wikipedia.org/wiki/Apollo_10



And not only Apollo flights, but a couple unmanned probes that did landings.


Yep, Surveyors were certainly a good test: https://en.m.wikipedia.org/wiki/Surveyor_program

There were actually theories that Moon might be covered in fine dust heavy landers might just sink in, so one of the objectives was testing that out. And thankfully the theory turned out to be incorrect. :)




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