In total, the object was only seen for about four seconds through the Command Module’s window.
But the brief appearance was enough for alien enthusiasts to get excited.
UFO expert Donald Ryles said: “This footage, if it is authentic, is quite amazing.”
And according to NBC News, a 2003 article published in the Journal of Scientific Exploration concluded with Japanese engineer Hiroshi Nakamura saying: “We believe that the object is a large extraterrestrial artefact.
“This is the only hypothesis that is consistent with the data.”