Water Journey

Concept art / visualisation. Painted, textured, and comped together in Photoshop, for "Our Universe", BBC / Netflix. Asteroids created in Houdini.
Trailer: https://www.youtube.com/watch?v=Q33TkQKlIMg
It's believed that ice and dust came together to form asteroids, which in turn collided with Earth in huge numbers, unleashing enough moisture to create the oceans.