Answer
Though the origin of the moon has been debated amongst scientists for some time, most scientists now agree that the Moon formed as a result of a collision between a Mars-sized body and a youthful, semi-molten Earth some 4.5 billion years ago. It was in this collision that some ejected debris went into orbit around Earth and gradually merged together to form the Moon.
Work Step by Step
Though the origin of the moon has been debated amongst scientists for some time, most scientists now agree that the Moon formed as a result of a collision between a Mars-sized body and a youthful, semi-molten Earth some 4.5 billion years ago. It was in this collision that some ejected debris went into orbit around Earth and gradually merged together to form the Moon.