The mirrors are small, and I don't see that particular point as being very persuasive. Yes, the mirrors are there, but they could have been taken there by unmanned craft. The Apollo 12 lander came down within a stone's throw of one of the unmanned craft that we had sent previously, so it's no doubt that the technology to get them there existed.
The mirrors, by the way, are kind of cool. If it was just a plain mirror, and it wasn't lined up exactly right, then a laser beam that originated from Earth would hit the mirror and bounce off in the wrong direction to return the laser beam to where it came from. So that wouldn't work. Instead, they use retroreflectors, which is a like three mirrors at right angles to each other, like looking into the back corner of a cube. Even if it's not aligned very well, light going in will bounce off the three surfaces and then come back out at exactly the same angle. Imagine a room where two walls and the ceiling are mirrors. In the corner where the three mirrors meet, you'll always see the reflection of your face in that corner no matter where in the room you stand. Same idea. You also have common, everyday experience with retroreflectors. The reflectors that they put on bicycles and many other things have these cube-corner mirror things, so that light hitting them bounces back the same direction it came. That's 'cause if a car headlight hits the bicycle reflector, you want that light to be sent back to the car so the driver can see it.
By the way, Gypseagirl, what are you trying to do, be everyone's favorite newbie or something? Coming on here and asking questions with an open mind is only going to cause people to like you.
