A former NASA employee has claimed that she saw two astronauts walking on Mars during her time at the space agency years ago, it has been reported.
The woman, who gave her name only as Jackie, said that she and some of her colleagues were monitoring images sent back by the Viking Lander 35 years ago when they saw the shocking footage, the Daily Star reported.
Jackie told US radio station Coast To Coast that she saw two men in space suits and they were walking to the Viking Explorer.
Conspiracy theorists believe there was a secret 1970s space programme but NASA has dismissed her claims.