There are many conspiracy theories that people actually say are true. These theories range from complete nonsense to a high probability that in fact, it may be true. Theories about what happened on 9/11, or that the government has been hiding evidence of extraterrestrial life, UFOs and even that lizard people are ruling the world, have been discussed and debated since their conception.
One of the most debated theories, is the one where people say NASA never landed man on the moon during the Apollo missions. This is a list of the accusations made about this topic and the rebuttal given by NASA and experts that have spent countless hours in researching this particular conspiracy theory.
Probably the number one conspiracy theory is the picture of the flag waving on the moon when there is no atmosphere. There is a simple explanation: it was due to inertia of wiggling the flag post into the lunar surface and because the horizontal rod that runs along the top of the flag got stuck part way out. This meant that the flag didn't "unfurl" fully and is hanging like a curtain rather than being stretched flat as was the original intention. The rod was used because NASA knew that, with no atmosphere and hence no wind, a flag would just hang down.
A 4 minute video about the flags on the moon.
The Apollo spacecraft passed through the inner belt in a matter of minutes and the outer belt in about 1 1⁄2 hours. The astronauts were shielded from the ionizing radiation by the aluminum hulls of the spacecraft. The inner belt is the more dangerous one, containing energetic protons.
A short video with more information about the astronauts and the Van Allen radiation belts
The lunar land modules did scatter a lot of dust, but in the landing itself, the power was decreased for many technical reasons and because of the light gravity that is with the moon.
About a 10 minute video to explain and even visualize the landing.
The light from the sun hitting the surface of the moon is too bright for any camera to capture something in the distance -- it would wash out any light coming from distant stars in the sky. Just as it is harder to see stars from a city because of the lights than it is to them from out of the city. All the lunar missions were done during the daylight, which lasts 29 Earth days.
The Lunar Modules used Aerozine 50 (fuel) and dinitrogen tetroxide (oxidizer) propellants, chosen for simplicity and reliability; they ignite hypergolically – upon contact – without the need for a spark. These propellants produce a nearly transparent exhaust.
Astronauts Neil A.Armstrong (Commander for Apollo 11), Michael Collins (Command Module Pilot), Edwin E. "Buzz" Aldrin (Lunar Module Pilot).
ready for take off. The camera was on the lunar rover and controlled from earth.
There are satellites that orbit the moon and since the debris is too small to see from a telescope, the satellite images show evidence of the lunar landing and man`s foot prints on the lunar surface.
A great example of how to reply to a person that thinks the moon landing and other scientific advancements from NASA are fake.
A video that puts the nail in the coffin for the conspiracy theory that NASA faked the man moon landings
They still will not accept that we landed on the moon-----they will say it is a film made in Hollywood.