Watch: Could 'gospel' be NASA's codeword for aliens?

A conversation about God between a "nervous" astronaut on the International Space Station and NASA Ground Control is causing a stir among UFO fans and conspiracy theorists.

The outer-space experts claimed that during a live feed from the ISS, the astronaut mentioned the word "gospel" when a strange red-coloured UFO appeared on the screen, the Mirror reported.

The un-named astronaut was heard saying: "On a personal level I look forward to this partnership with the gospel," to which ISS staff replied: "We will pray for you up there. You have our prayers."

The alleged excerpt from the live stream was uploaded to YouTube by UFO blogger Scott C Waring.

According to Waring, the appearance of the UFO as the astronaut mentioned the 'gospel' was significant and could not be a "coincidence."

However, a forensic UFO investigator, Scott Brando, who runs hoax buster website, seems to have stopped the conspiracy in its tracks by proving that it was no UFO, but a lens flare or light reflection.