What exactly was it that the monks saw that night in the sky in 1178? Could it have been the impact of an asteroid hitting the Moon’s surface? Or a meteorite entering the earth’s atmosphere just at the right moment? Did the Moon really split in half or was it just a shared delusion? In this video we shall talk more about this strange Medieval mystery that has baffled historians and scientists alike for almost 850 years. It should be said that the monks in question were more than willing to take an oath to substantiate what they had seen. Gervase further reported, “They are prepared to stake their honour on an oath that they have made no addition or falsification in the above narrative”.