The Moon does not simply hit the Earth because it is in a stable orbit around our planet. The motion of objects in space, such as the Moon, is governed by the force of gravity. The Moon's orbit is a delicate balance between the gravitational pull of the Earth and its own momentum.
When an object, like the Moon, is in orbit, it is continuously falling towards the Earth due to the force of gravity. However, it also has a significant sideways velocity, known as tangential velocity, that keeps it from crashing into the Earth. Essentially, the Moon is in free fall around the Earth, constantly moving in a curved path.
This balance between the inward pull of gravity and the outward motion due to the Moon's velocity creates a stable orbit. If the Moon were to slow down significantly or lose its tangential velocity, it would start to move closer to the Earth and eventually collide with it. Conversely, if it were to speed up, it would move into a higher orbit or even escape Earth's gravitational pull altogether.
In summary, the Moon remains in orbit around the Earth because of the gravitational force that keeps it moving in a curved path. Its tangential velocity prevents it from falling directly into the Earth.