The moon was thought to be made of a special kind of rock called a north recite, which can only be formed through a cataclysmic event like a giant magma ocean. However, evidence suggests that the moon could not have formed through the slow accumulation of dust and crumbs. Scientists developed the giant impact hypothesis, which states that the moon was formed from a collision between Earth and another planet called Thea. This collision would have caused earthquakes, winds, and tides, ultimately resulting in the creation of the moon. The moon's chemical composition should resemble Thea, but instead, it closely resembles Earth. The identity of the object that collided with Earth remains a mystery, leaving scientists unable to determine its fate or uncover its secrets.