They were left by the crews on 11, 14, and 15.The only one of those to have landed on the moon by 1969 was Apollo 11.-Theyve already proved that theyve landed on the moon. You cant visually see the objects they left behind,......
The Lunar Reconnaissance Orbiter has been orbiting the moon since 2009, and has taken pictures of all of the landing sites, with enough detail that you can see the tracks the astronauts made as they walked around.
If you do a Google Images search for "lro apollo landing sites" (without the quotes) you'll see plenty of them.
As for how you can prove the reflectors weren't put there later, that one's easy: the first signals were bounced off of them and received by the McDonald Observatory in 1969. They were left by the crews on 11, 14, and 15. The only one of those to have landed on the moon by 1969 was Apollo 11.
Theyve already proved that theyve landed on the moon.
You cant visually see the objects they left behind, at least I dont think. Though they did leave behind specifically positioned mirrors, that are designed to reflect lasers. If you have the right equipment, you can find out the coordinates of the mirrors (NASA publicly released them), and then shine a powerful laser onto the mirrors, and then one of the pieces of equipment will tell you whether or not the laser is being bounced back or not.
How on earth can you doubt it? They've released countless videos, photos, and moon rock specimens as well as spent billions of dollars on their space programs. They've already sent probes to all the planets in the solar system except Pluto, which will arrive there in 2015. Millions of people actually watched the launch and re-entry of the various space shuttles and capsules both with their eyes and on TV. How can you possibly need further proof that they landed on the moon?
I have seen the pictures of at least one site from a lunar orbit. They have pictures from back then. I remember all of the landings. There were hundreds of thousands of people who worked on building the rockets or some aspect of the launch. They were seen by the entire world as they launched. The Russians and Chinese were both our deadly enemies at the time and had tens of thousands of spies. It would be impossible for them to hide much about something as large as the moon landings. That wasn't like a satellite. That was a national mission and the whole world was watching.