The NASA photo in question shows a region in the northwest of Argentina.
According to NASA’s archive, it is the Salar del Hombre Muerto salt plain.
In the top-left corner, there appears to be a green streak of light, which Mr Waring believes could be an alien spaceship.
The UFO expert wrote on his blog ET Database: “I found a NASA photo from the old 1968 Apollo 7 mission and it has a green UFO in the upper left corner.
READ MORE: Alien city discovered on dark side of the Moon – shock claim
“The UFO is unlike any spacecraft I have ever seen and seems to be a UFO that is passing below the Apollo 7 module.
“The photo itself gives us lots of information like the module’s exact location ... Read even more
