The Moon is our only natural satellite. Despite its proximity to Earth and the fact that man has visited the Moon, there are still many questions about the Moon. Scientists still struggle to answer some fundamental questions like: What is the nature of the Moon’s core? What is the structure of the mantle? And, despite recent evidence of substantial water on the Moon, why is there so much less than on Earth? According to the most accepted theory, the Moon formed roughly 4.5 billion years ago, when a large body the size of Mars hit the young Earth. The debris of both the impacting body and the Earth’s outer layers formed our Moon. Almost immediately, gravitational forces
