The origins of the Moon have been the cause of many a scientific debate over the years but more recently we seem to have settled on a consensus.
On the scale of cataclysmic events, the whomping impact of a Mars-sized object that crashed into Earth some 4.5 billion years ago ranks pretty highly: thought to have set in motion the movement of our planet's fractured, rocky crust.
Long ago, an alien planet crashed into Earth – causing a collision so big the debris formed the Moon and left mysterious remnants lodged deep in the Earth’s mantle.
Where does the water on Earth come from? How was our Moon formed? And is there one single event that had led to the formation of both?
