That is if you believe a crack pot conspiracy theory that is gathering support.

The favoured official scientific explanation is that the Moon broke off from the Earth's crust after it was struck by a massive Mars-sized object, and then remained in our orbit.

But many pseudo-scientists and conspiracy theorists have latched onto claims that the moon's existence and relationship with Earth defies physics, to brand it an artificially-created object.

Many scientists agree the size of the Moon is one of our solar system's biggest anomalies.

Physics has been unable to explain why a planet the size of Earth has a Moon of such a large size in comparison.

Our Moon would be expected to be about 40 miles in diameter, but is closer to 2,000 miles.

But the conspiracy theorists have taken the giant leap from this to claim aliens from billions of years ago created the structure… and it may even be occupied inside, in a similar way to the infamous Death Star from the Star Wars movies.