The video delves into the mystery of Earth's water, detailing different theories of its origin.

It explores the possibility of water delivery by comets, the discovery of ancient minerals indicating the presence of water on the early Earth, the role of asteroids in Earth's water supply, and the formation of the moon from a collision with Earth.

Scientists present different theories as to how Earth has retained its water despite cataclysmic events in its history.

They consider the interplay of multiple sources contributing to Earth's water supply and ongoing research efforts to uncover the origins of Earth's water, including investigations into ancient water hidden deep within the Earth's mantle.