  I don't know but one of the most common proofs given is that stars can't be seen in any of the photographs from the Apollo missions. The just urlLink weren't looking properly ! Someone has taken some of the Apollo 11 pics and processed them through photoshop (tm blah blah! ) and has found stars are visible in the sky. So was it faked? This urlLink guy thinks not but a really convincing argument that it was faked can be found urlLink here . Just don't let urlLink this bloke hear you saying it! And whilst we are on the subject of the moon here's a couple of cool lunar panoramas: urlLink 1 , urlLink 2 (need QT). 
