[taxesareforever]

Man-made artifacts, especially corner reflector arrays, are detectable at the claimed landing sites.

And the proof of this is...?

[cabojoe]

Try googling "corner reflector arrays moon". If you still have doubts, I'm sure you can contact some of the researchers that are still firing lasers at the reflectors on the moon.

[Publius6961]

Do you even know what a corner reflector array is?
If lasers can be repeatedly bounced back from it (Measuring distance exquisitely) it must have gotten there somehow. And the locations are precisely known.

What else do you need to know?