The Origins of Earth's Water: Insights from Planetary Formation and Space Observations.

A new study suggests that the degassing of early-formed planetesimals restricted the delivery of water to Earth during its formation. The research proposes that the water content of the inner solar system was initially higher than previously thought, but the process of degassing removed much of the water from the planetesimals before they could merge to form Earth. This finding sheds light on the origin of Earth's water and the volatile content of the inner solar system.