UFO watchers have been excitedly sharing a European Space Agency (ESA) image purportedly showing an alien moon base first posited by NASA astronaut Buzz Aldrin.

UFO sighting: Alien life conspiracy theorists believe an alien ‘monolith’ has been found on Phobos (Image: ESA)

UFO sighting: Scott Waring and other UFO enthusiasts are searching for alien life around Mars (Image: NASA)

He believes his dubious discovery is actually adding to evidence the ESA and US space agency NASA are involved in a conspiracy to suppress knowledge of intelligent alien civilisations in our solar system.

He said: “The monolith is far larger than any of us thought.

UFO sighting: Waring believes he has evidence the ESA and US space agency NASA are involved in a conspiracy (Image: NASA)“This means the Mars moon structure or ship is approximately 1.4 miles long (2.2km).