The famous mission to the moon led to the first people – namely Neil Armstrong and Buzz Aldrin – to set foot on the lunar surface in 1969.
But the Apollo 11 moon landing has been the subject of one of the fiercest conspiracy theories in history.
Despite NASA denying the claims, some people still believe the space agency is hiding the truth.
Now controversial website NotFromEarth.com has added its voice to the crowd.
Transcripts from a NASA meeting are proof the legendary astronaut commented on something which prompted opinions that extraterrestrials walked on the lunar surface too, it said.