I don't usually approve of this sort of thing

but this guy had it coming.

The guy had it coming. In addition to being extremely rude, he is an idiot. If you doubt that we went to the moon, all you have to do is shine a laser at it. You see, one of the experiments that Buzz left behind was a set of "corner reflectors" - a set of mirrors arranged so that any light sent to them is reflected right back at its source. This was part of an on-going experiment to allow us to measure how quickly the moon is receding .

You see, the moon is moving away from Earth due to the interaction of the tides. The moon raises tides on the Earth [1]. Because the Earth rotates as well as revolves [2], the tide is always in a different place than the moon. It thus acts as a brake on the Earth's rotation and transfers the energy to the moon, moving it further out in its orbit. It sounds complicated, but it is really very simple [3]. We left reflectors on the moon so we could check on this prediction from Newton's Law of Universal Gravitation [4], and have kept using them as a check on other things.

But the cool thing is that anyone can send a pulse to the reflectors - all it takes is a powerful laser, which is pretty cheap nowadays, and a photocell, which has always been cheap. So you can check to see if we've been, just by shining a light on the problem [5]! Which, of course, makes hash of the whole "we ain't never been and its all a giant government conspiracy!"  argument; it's like an American claiming that Columbus never sailed across the ocean and it is all a big fake. And if you wer eon Columbus' crew, you might want to take a poke at the guy, too.

John

[1] And vice versa, but let's not complicate this too much.

[2] An object rOtates around its Own axis; it rEvolves around an Exterior axis. (In other words, when you twirl in place you are rotating, but when you move around someone else, you are revolving.)

[3] In math, anyway...

[4] As scientists, we check everything, no matter who said it!
 
[5] One of these days, I'm going to get around to sending a modulated pulse ot the moon, just so I can hear it sing back to me: "SHine on, shine on harvest moon"...