No Comets Required? How the Growing Earth May Have Created Its Own Water
Earth may not have needed comets and asteroids to deliver its water after it formed and cooled. Instead, water creation could have been part of the planet's formation process. New research explains how, and even shows that water creation could be a part of every rocky planet's formation.
We haven't written up this one. Universe Today has the full story — the link below goes straight to it.